>>1333856real talk: the people who actually try to follow the example of Jesus aren't as loud, obnoxious, and publicly visible as those who use the Bible to justify hatred, violence, greed, and otherwise being a horrible person
the dude on the street corner preaching about how God Hates Fags or the lawmaker trying to push their beliefs on everyone else through the law are more likely to get attention - and therefore create a negative perception of Christianity - than someone who gives their time and money to directly help people in need without seeking attention, praise, and general adoration for doing so
in short: loud-ass dipshit fundie/evangelical Christians and the power they hold in American society are the reason many non-Christians consider Christians to be "fair game" for mockery and derision