I have no problem with liberals. They are rational and we can debate the best solutions to problems. Often, they point out issues that are very real... it's their bad solutions and lack of follow-up to determine the impact of their policies that I disagree with.
These leftists (marxists/communists/corrupt sellouts) with their disruption of cultural norms and refusal to recognize hypocrisy and circular arguments, ad hominem attacks, etc... They drive me nuts. They have an agenda and only wish to bully you into silence, not to act like adults. I have to turn the other cheek and don't bother to engage them if they won't act respectably.