It depends on our motives and the means through which we accomplish it. Political humor and satire has as a motive the using humor to make a point about pride, hypocrisy, arrogance, intolerance, etc. They use humor to make a larger point and focus our attention in the direction of truth, justice, and mercy or at the very least humble us from pride.
However such satire should not be a crude criticism based on malice, animosity, hatred, personal ridicule and insults. Such attitude and means would be entirely alien to Christian morality. Political humor and satire should seek a greater good rather than a simple tearing down and injury to other persons.
The gravity of offensive use of humor would depend upon the depths of sinister motives and the possible public injury to the reputation of another.