Putting assholes in charge never goes well. (Many) people think they'll give a good kicking to the people who deserve a good kicking, but their special snowflake status and all around superiority means they're on Team Kicking not Team Kicked. Of course it doesn't really work that way in practice. Narcissistic assholes just kick whoever is a nuisance that day. Could be your friends, family, or you.
Trump's an asshole. The people running Britain now are assholes, and the people who support them are bigger assholes. I'd like to say this will be the last asshole election, but probably not. As Jesus said, the assholes we will always have with us. Something like that, anyway.