They both come from the same basic failing which is laziness. Both are ideologies which offer simple easy to understand answers to nearly everything you are likely to have a problem with, and therefore save the effort of have to address each problem individually.

Religion... pure and faultless is this: to help widows and orphans in need and avoiding worldly corruption. James 1:27

According to biblical text religion does not state anything about being biased or racist when helping those in need or avoiding worldly corruption.

They are two of the worst forms of ignorance, based on BELIEFS and rooted in fear.

"The fanatic is perpetually incomplete and insecure. He cannot generate self-assurance out of his individual resources - out of his rejected self - but finds it only by clinging passionately to whatever support he happens to embrace. This passionate attachment is the essence of his blind devotion and religiosity, and he sees in it the source of all virtue and strength - He easily sees himself as the supporter and defender of the holy cause to which he clings. And he is ready to sacrifice his life." - Eric Hoffer