the difference between liberalism and... pretty much every other ideology, is point one of liberalism is "You know what, I might be fucking wrong about this, and even if the things I think are right turn out right for me, they might not turn out right for anyone else, so you pretty much have to tolerate and respect other peoples beliefs as having exactly the same weight as your own, because you don't have any special rights or authority than anyone else".
Pretty much every other ideological starting point is "I have the authority of being 100% right about everything and the One True Faith, and if anyone comes round here saying any different, chase them off or beat them the fuck out, but definitely don't listen to a fucking word they say because its all horseshit, especially anything that contradicts what I say, being 100% right about everything all the time".