Sitting US Senator (McCain) making speeches to protesters in Kiev. Sitting VP (Biden) threatening to withhold financial aid if prosecutor isnt fired ( who happens to be investigating firm son works for).
Russia has no business whatsoever in the internal or foreign affairs of Ukraine that don't concern them.
The Soviet Union placing ICBMs 100 miles from Florida is very much a threat.
While the threat of violence always underlies the balance of power, countries have to form some basis of civil agreement in order for things to work.
In your example, imagine if you had to personal carry a gun to ensure your own safety and the fulfilment of contracts. That's not going to work.
Russia has every right to lament treatment of Russian minority, at the same time, it was created by them.
Russia has been very, very directly interfering in Ukranian politics and trying to turn it into a vassal state for the last 30 years.
The Russian occupation in 2014 definitely created the 'permanent line of violence' in Donbas, which they are now using as a pretext for invasion.
As the commenter noted: Russia can fuck themselves. In a world where nobody is perfect, they are 'bad actors' and particularly they have a lot of weapons which they throw around in that context. Screw them.
US/EU options are limited because of NATO, WW3 outcomes, but we should take every other opportunity to help Ukraine.
What the Ukranians have been doing in the last few days is nothing short of heroic.
In many ways, the US and China have each been trying to do very much the same thing as Russia, just taking different routes to doing so. China uses golden handcuffs in Africa and Southeast Asia (plus some strong arming of its direct neighbors), the USA uses direct handouts (cash and goods) and the promise of coming to the military aid of a country to keep others from building up their own economies or arsenals while allowing the US to host their airbases and missile silos around the world, and Russia just takes the direct approach of strong-arming its neighbors into becoming vassal states.