CCP walk up to a British public piano and call the police to say filming them is not allowed. The fun starts at 9:14Badass Boogie Bundle Pdf's (Boogie Woogie...
Seems they were known already, looking this video:
This video seems to have more accurate information than speculation of Brendan Kavanagh in the 3 min video above:
British pianist Brendan Kavanagh confronted by CCP propagandists [11:54 | Jan 22 2024 | China Insider with David Zhang]
https://www.youtube.com/watch?v=vZnWeWlWQ2o
Seems they were known already, looking this video: