The opposite of woke is random shit boomers happened to grow up with. If your politics are based on some principle you can justify, then if you lose you try again later. If your politics are based on a random collection of historical accidents you can’t justify, and you don’t even like most of them except for a couple, but you think the only way to keep the couple you do like is to defend all of them, then losing is the end. You have to fight to the death, and once you do lose you can’t cope by doing better next time, all you have is revenge.
Sometimes liberals also want to defend historical accidents that they think fit their idea of liberalism, and then they adopt the same kind of aggressive deterrence strategy, like pro-Israel liberals with college protests or the English with trans people.
The Soviet officer is Semyon Krivoshein, he’s Jewish and not celebrating for multiple reasons. The Nazis occupied Brest when they weren’t supposed to, Krivoshein got there and started negotiating to try to get them to leave. The Nazis were making a propaganda film out of this (which is where the picture comes from) so they wanted the Soviet army to have a parade with them. After an argument Krivoshein agreed that just him and some of his staff would stand there and watch the Nazis parade out of town in exchange for the Nazis leaving Polish prisoners they took in Brest.
Brest was 50% Jewish at this point, in Operation Barbarossa the Soviets defended for 6 days, Jewish Soviet officers were summarily shot by the Nazis, almost the entire Jewish population of Brest died in the Holocaust.