The US is interfering in Hong Kong. Among the people taking part in the protests are people who look like they are Americans. The situation in Hong Kong is comparable to a colour revolution.
The US is supporting and encouraging Hong Kong protests.
Conspiracy theory without evidence.
For years, pro-Kremlin media has used the narrative about anti-government protests being funded by the US. Examples include colour revolutions in post-soviet states, the “Arab Spring” revolts, and Euromaidan in 2014.
For similar cases see here.