There was no US destabilising Ukraine, there was no coup, those are taken right from the Kremlin book of propaganda.
There were civil society protests in Ukraine in 2014 to oppose government’s withdrawal from EU talks. Ukrainian government, then backed by Russia, used brutal force against civilians while Russia “secretly” and illegally annexed Crimea (as always with them, firstly not acknowledging anything, using so called little green men, russian soldiers without proper markings, who later got medals for it).
At he same time, Russia invaded Donbas, again “secretly”, talking about “civil war”, but it was no civil war. The so called separatists were controlled by Moscow, supplied heavy weapons and even commanders by Moscow.
Eight years later, they invaded massively and openly, bz make no mistake, Russia’s attempt to destroy and landgrab Ukraine lasts way longer than that.
Ten thousand people (though I’d guess it’s even less) is laughable, nearly a non-event. Especially considering in the past these organisers were able to gather a much larger crowd.