overtake the USA power and begin a real massacre of white Alaskans
Yes, an actual massacre (like this) might be a good enough justification for foreign intervention — though not for an annexation.
But no massacre has happened — not in Crimea, not in Kharkiv, not Lviv, not Zaporizhya, not in even in Mariupol and Slovyansk (the two towns that fell under Russia's control briefly but were retaken).
Entire national guard battalions are formed in the East from people, for whom the first language is Russian — if they are willing to die for their country, maybe, the allegations of the country's plans to "hang them" over their language-preference aren't entirely truthful, huh?
Your fears might've been justifiable for a victim of massive state-propaganda a year ago, but by now — with Ukrainian "junta" in power for over 12 months and yet not one concentration camp, gas chamber, nor even a one-time mass-execution of Russian-speakers in evidence — the excuse is no more.
If you continue to believe — and even parrot — this crap, there must be something seriously wrong with you. Either you are brain-dead stupid, or a (paid) Putin's troll...
There are afaik no Ukrainian schools in Crimea
Not any more, that's for sure — because Russia shut them down.
All of your justifications are repeatedly demonstrated as non-sense and, even if they were valid, they would've justified only a wrong-righting invasion, but not a permanent annexation of any land.
Vatnik much?