People are always going to have ideas which conflict with the mainstream, ideas that incite outrage and seem totally absurd. If history has anything to say about the matter it's that some of these absurd ideas have proven themselves correct despite mainstream acceptance, even outrage, to the contrary. If these ideas were silenced because they clashed with the mainstream then societies would seldom have progressed beyond dogmatic belief. What immediately comes to mind is viral FB content proclaiming masks as a panacea for Coronavirus and the government will abduct your children if you test positive. God forbid Facebook won't be removing that content though, because it doesn't clash with the mainstream zeitgeist that our reaction to the outbreak hasn't caused more long term harm than good at this point.
Good grief, I never thought I'd find myself defending the existence of Holocaust denial content on the internet, but it blows my mind how in the age of the internet we STILL don't understand how to deal with trolls.