Ok so it's 6:30 AM so bear with me as I work this out. Ok so who has seen Frozen 2... everyone? Ok good. Ok so at the end Elsa is presumed dead, Olaf is dead, Anna is all alone and she learns a sick and twisted truth. Her beloved people betrayed and hurt a different group of people, just because they were different and "different is dangerous". So she has a choice to make she can go home, marry Kristoff, forget about the people of the forest and rule Arendelle or she can "do the next right thing". She even sings a song about it. The last line of which is this "When it's clear that everything will never be the same again
Then I'll make the choice to hear that voice
And do the next right thing". So Anna chooses to destroy a huge dam and possibly destroy Arendelle to make things right with the people they wronged. In that moment she is not at home saying "All Lives Matter" or " What about Arendelle lives?" No she has giants bust down that damn and she makes things right. She heals a 3 generational wound between the kingdom and a minority group they had disenfranchised. I must have heard that song 20 times yesterday and it finally clicked. "When it's clear that everything will never be the same again Then I'll make the choice to hear that voiceAnd do the next right thing".
You need to understand, saying All Lives Matter is not the next right thing. Being a party to fear, ignorance and bigotry is not the next right thing. To make this right we have to change everything. We have to break the dam and risk our world to bring peace. Anna did.