Why can't most Liberals argue?

[KennanHarken]

It seems that every idiot I encounter in a debate are left wing leaning communist idiots. They cannot argue with facts. If you state the truth and back it up you are a monger or a bully. If you make them look like an idiot your a know it all. If they dont have anything to say, they useless pointless terms such as "some people say" or "not everyone does this". They argue policies and laws that don't affect them but dont realize the consequences of it