The safe thing, clearly, is never to name anything after anybody. James McGill owned slaves, so we’ll have to rename his university. William McMaster excluded non-Christians from the university that bears his name, so that will have to be excised. Winston Churchill, a man of his times, was quite racist in many of his views so lots of name changing to be done there. Oddly, Queen Victoria harboured unfortunate views about women (vehemently opposed to suffrage), so there are schools, colleges, even entire cities and Australian states to be renamed. 

Let's just use numbers.