[user104658]

OK so having actually watched the performance now ( I know, I know...) I don't actually get what there is to complain about? I think I assumed that it was politically partisan but... it isn't even that... it's mainly observational of the issue and quite hopeful of a better future. Somewhat ironically given the response, perhaps.

I liked the performance, I didn't find it earth-shattering or revelationary but because of that... it really isn't controversial. It doesn't play into political tribalism in any particular way. So yes... the complaints really are petty and I can't think of any reason for them other than people having an automatic "ew lefty stuff yeuch" reaction.