Yeah this has been happening in Toronto for the past few weeks. At a big rally in support of Hong Kong a few weeks ago a bunch of this rich mainlander kids showed up and revved their $150,000 cars' engines constantly to disrupt the event.
It's unbelievably pathetic.
It's funny because they never make payments on those cars; cars get repo'd, and these fucks go back to China or whatever to avoid payments for said cars, student loans, etc.