It's much larger than just the US. At this point there are protests scheduled in many other countries as well. https://handsoff2025.com/

There is one scheduled in London on the
North Terrace in front of the National Gallery (3pm on Sat, 5 April) at Trafalgar Square, London, UK
London WC2N 5DS, DC 20001

Also in Edinburgh, as well as in Netherlands, Belgium, France, and two in Portugal. There's also one on American Samoa, though I don't see any in Australasia.

They're all over the US. I'll be going to one in the town directly south of me. Alas, my city doesn't have one scheduled.