No it doesn't - yeah, it kinda does.
Yes, the George Floyd/BLM madness is but one example.
Others (from a UK perspective) include:
increased profile and celebration of Halloween, which used to be much more low-key until trick-or-treating was imported from the USA. There was an old tradition of going from home to home in parts of Scotland and Ireland but nothing on the scale it is today, and the idea of "trick or treat" (with accompanying cry) was apparently started in Canada then adopted in the USA first decades before crossing the Atlantic.
"Black Friday" sales - we never had such a thing over here until about 5-10 years ago, and the timing fits with the US thanksgiving holiday, which has no equivalent in the UK - our traditional sales periods were Boxing Day (26 December) and the January sales.
There are baby showers and "gender reveal" parties
NFL (which is now increasingly appearing at our main English stadium in Wembley and on UK TV) - which isn't even "N"FL for this country, since it's not from our nation!
A fair proportion of youth slang, including calling the police "feds" (when the UK is not a federation).
And then of course there's cancel culture, an extremist overspill of the MeToo movement - suppressing of viewpoints that are not considered "acceptable", including 'deplatforming' speakers at universities, libraries and other locations
Those are just a few that come to mind. There are many other cultural, linguistic and political behaviours that seem to make their way over here from the US, and I'm sure we're not the only country.