The truth is, liberals bore themselves and each other and which is why they go about trouble-making and being uncivil. You are being way too kind.
The truth is, many liberals are so filled with hate that they don't know any other way. It's like cancer spreading.
They are filled with hate because in life they are rudderless, and so rather than do the work to provide a positive self-direction, they resort to the lowest and coarsest of behaviors -- looking to blame, harm, intimidate, hate others.
They don't like themselves much and have far too much ego investment to admit that.