That many Protestants discriminated against Catholics != "founded on freedom to persecute Catholics"

I say this as an American Catholic who went to Catholic schools until college and knows full well about Catholic discrimination in US history. Protestants have discriminated against other protestants, everyone has discriminated against LDS, LDS has discriminated against everyone else, everyone has discriminated against Jews, Catholics have discriminated against <insert your choice of target here>, etc. These facts don't make up founding motives just because they are true.