I agree completely that the acts you listed were horrific acts in the name of Christianity. HOWEVER, you yourself admitted you have not read the Bible yourself, meanwhile you harp on people for saying things about things they haven't read.
I think you'd better practice what you preach, junior. Since you haven't read the Bible I can assure you it didn't say 'Go kill those Jews, they're just trouble'. Did it say you could only be saved through Christ? Yeah, but it NEVER says 'purge the nonbelievers'.
People did lots of terrible stuff in the name of Carl Marx's ideas about communism, except when you compare their acts to his ideals you'll notice the offenders twist the idea until the meaning is changed. That's the same thing with violent acts in the name of Christianity. Go ahead and blame the people who did that, but don't blame Christianity for the unorthodox and uncalled for violence done in the name of it.
Wanna feel God? Step onto the wrestling mat and you'd be crazy to deny the uplifting spirit.