Joshua's claim that Disney "kowtows to Beijing" echoes comments made by the US attorney general William Barr last month.
You might remember the huge protests in Hong Kong last year. Young people led months of demonstrations against a law which would allow extradition from Hong Kong to mainland China.
The protests widened to include demands for democratic reform and an inquiry into alleged police brutality.
During a period of unrest Chinese-born actress Liu Yifei - who's an American citizen - shared a post from the government-run Beijing newspaper People's Daily on Weibo.
"I support the Hong Kong police. You can all attack me now. What a shame for Hong Kong," it read.
With all that history and everything still going on, prominent activist Joshua Wong has called for "everyone who believes in human rights to #BoycottMulan #news".
But Disney's Mulan is facing calls for a boycott in some Asian countries.