Was outrage over London hosting a black-only theatre performance justified?

Even before it's London premiere, the play 'Tambo & Bones' was making headlines by announcing the Black Out night performance which took place this week. I've not seen any coverage of it since it actually happened, but I definitely wanted to discuss it, and as the conversation in this video proves, it certainly gets people talking. Thank you to Grahame for the interest in this project and for giving his in-depth thoughts on this issue.
'A play focussing on black history has been playing at a theatre in East London, and for the show on Wednesday, white audience members were asked not to attend, in an attempt to make the performance free from the 'white gaze'. How do you feel about the theatre's decision?'
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Anyone can show up, you have no choice. Terrible idea.