In the circus of comedy, where the tightrope between genius and garbage is as precarious as a politician’s promise, and the line between hilarious and heinous is as thin as the president’s hairline, Shane Gillis parades as living proof of a cynical maxim: No comedian is too outrageous — especially when his humor drills through decency to emerge, smirking, on the other side of propriety. You simply can’t keep a good comedian down. Or can you? But here is the real question that has emerged following edgy and anti-woke comedian Gillis’s far from politically correct opening monologue on “Saturday…