In the USA - fundamentalist evangelicals. They have a warped view that this is a christian nation and therefore deserve to inject their beliefs into government systems from town ordinance to federal constitution. A theocracy is the desire. Subordination to cherry picked bible "rules" and forced nationalism will be the norm. Freedom to discriminate against anything deemed anti-christian will be let loose upon the population. Once having control of a military power, there will be another Crusade in foreign countries.

All of them. There is no compromise with religious people. Democracy cannot survive without compromise.

Southern Christian Bible Thumping, Gun Toting Racist Rebuplicanism.

The most dangerous : the belief in American Exceptionalism...://www.amazon.com/Killing-Hope-Military-Interventions-Updated/dp/1783601779/ref=sr_1_1?ie=UTF8&qid=1528226197&sr=8-1&keywords=killing+hope+us+military+and+cia+interventions+since+world+war+ii&dpID=51J9YuPt6yL&preST=_SY291_BO1,204,203,200QL40&dpSrc=srch

Christianity. Look at the way it's infecting Western governments, especially the US.

Any fundamentalist branch of any religion.

Tricky question! Having traveled in 8 Islamic nations, I'll say they're the worst, as far as personal liberties are concerned. Their treatment of women can be despicable and, in the end, Islam is the final ''judge'' of any situation. Logic just doesn't matter. Thinking on this, I realize Orthodox Judaism's no better.

Evangelical christian and (usually goes hand in hand) white supremists! They seem to be running, I mean ruining this country and its democracy. I'm amazed at the lack of "christian values" in these people!

Any Religion that Actively seeks to suppress the Freedom of others. Those who Favor the Following: 1) Violence 2) Coercion 3) Discrimination 4) Laws that limit or restrict freedoms

So in other words: Fundamentalist Christians and Muslims

I don’t feel threatened by any . The Catholic Church was once dictatorial, but not now, and it’s on the wane, at least in the US. There is a plethora of noisy, cultish things but none of those have much power.

Neoliberalism -The Religion of contemporary Capitalism - is the most destructive to the environment, to countries that resist exploitation, and to American citizens. Islamic fanaticism has grown as a reaction to the chaos caused by capitalist wars. But it was the capitalist countries that encouraged that fanaticism in the first place to destroy socialism in Muslim countries. Domestically, neoliberal capitalism has also destroyed the kids of Flint and NJ (see "kids for cash" ), areas where fracking occurs, etc. etc. American neoliberal capitalism incarcerates the largest population in the world.

Islam. As bad as Christianity is, there are no Christians in the modern age who would behead you for drawing a funny cartoon of Jesus.

I'll go with fundamentalist anything.

Now I don't like to use a broad brush to paint anything or anyone, that is a dangerous start that can lead to complete intolerance. So I will qualify my answer by saying it's all IMHO and I recognize that the acts of some should not constitute a reason for tarring all the rest. Having said that, it sure seems like the evangelical wing of the christian religion is mighty interested in turning us into a blatant theocracy. Southern Baptists are slightly saner, but even so they are in the amen corner enabling a lot of what the radical evangelicals are trying to do. Anybody have anything to convince me otherwise? I am willing to listen.

I would have to say Islam. Dont get me wrong, I live in a multi-cultural community. Many of my customers are muslim and they have done wonders in cleaning up my area of the city but just look outside of the USA (I know thats hard for some you). Center of Islam is Saudi, a kingdom. Most of the arab world is not democratic. Its extreme is most anti-democracy. FFS the muslims enjoy more democratic rights in Israel than surrounding countries. Even in Pakistan, the corruption makes a mockery of the voting system. There is no muslim country where democracy flourishes, not even Turkey.
Now some of you will say that this is because of western interference and there is a point to that but hey you had UK interference in 1776. The difference is you had the will and leadership to fight for your rights. Not just read the old book and do what your told.

Any EXTREMIST, regardless of religion-type, is a threat not only to democracy, but humanity due to their egocentric and close-mindedness. You simply cannot easily discuss with these people unless you share similar perspectives.

I find that most non-extremists religious people remain curious and open-minded and they contribute to the community and respect democracy.

Whichever of them says you won't be saved (or their version) if you aren't a practitioner. So, most, yeah?

The two most dangerous are extreme evangelical Christianity and the most fundamentalistic Islamic sects.

I think they’re all destructive to democracy. Religion Is The Problem.

All theocracies

evangelicals who try to force others to obey their beliefs.

A functioning democracy is a useful politicaI mechanism to avoid frequent civil wars, but I do not think that democracy is as important as personal liberty and limited government. It is perfectly possible to have a totalitarian democracy that commits mass murder, such as in France during 1793-4.

In the USA we have never had a democracy; we have a constitutional republic. And it is my impression that those who want our constitutional republic to be more "democratic" typically have little respect for personal liberty and limited government.

Thanks to all who responded (so far 37 people).
I ask this question because to me it's important on many levels - one being that democracy is at stake.
Here is my other question to you all ... what measures if any do you take individually or collectively to address your concerns?

From my perspective it's Christianity, probably because that's what I'm most exposed to and that is the group that comes out to vote in the ridiculous laws that get passed here due to their influence.

Then: Christianity, Now : Muslim. Both are evil.