What are your thoughts on the Irish bonfire?

In County Tyrone, Northern Ireland, they've built a giant bonfire from wooden palettes and placed a boat full of black people on top of it. It's meant to be a protest against immigration but it's come under criticism for obvious reasons.

https://www.bbc.co.uk/news/articles/cx2kgpnr2dlo

Putting aside the immigration question, is this a legitimate expression of free speech or taking things a little too far? Would this kind of thing be allowed in the USA?
What are your thoughts on the Irish bonfire?
What are your thoughts on the Irish bonfire?
What are your thoughts on the Irish bonfire?
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