It's hard to poke fun at politicians in an era when they're held in contempt and every joke is policed for offence, say top television writersIt has become a commonplace to remark on the hyper-sensitivity of the culture; a person saying a vile thing can never be debated, but only no-platformed. A person who once debated another person who went on to say a vile thing thereby shared a platform. Often it's hard to estab…