Liberals only know how to deal in ridicule. Of course, they are just following the leadership of their mentor, Saul Alinsky who considered ridicule a socialist's best weapon when fighting the right. Ridicule is an action or words intended to evoke comtemptuous laughter or feelings at the expense of others.
Rush Limbaugh and the whole "Right Wing" crew deal in satire, which is described as being 'irony, sarcasm or caustic wit used to attack or expose folly or vice'. It actually takes a lot more thought to present satire and to understand satire.
Radio audiences are so used to real satire. Anything else will just get on their nerves.
Good observation, I'd never thought of that before, but it's true.
Liberals don't have the intellectual capacity to create interesting satire.