In 2001 it was the brownface incident during an "Arabian Nights" themed party. The blackface was from a 1990's video. He also admitted to wearing dark makeup at other times.
https://lfpress.com/news/politics/el...0-4a84fdfb3ee1
If Trudeau was capable of better political strategy then he would have his cronies purposely slip those photos/videos to the public several months before the campaign started. To kind of take the steam out of any future fallout that would come later. I think I've seen that 1990 video clip of Trudeau in blackface a few years ago. Didn't make much of it.
Justin Trudeau is (even if only implicitly/subconsciously) 'racist' not because he wore brownface or blackface, but because he married a White woman and had White children with her. Surely he had plenty of brown and yellow women to chose from. The paradox is that Justin Trudeau pushes anti White agenda.