"political activists" is 1) plural (wasn't it only 1 committer?) and 2) an opinionated label for someone we don't know much about. Sure, the commit may be an act of political activism, but to label the individual based on this one action seems inappropriate.
And "compromised" makes it sound like it's against the will of the maintainers. Do we know that? The commit was 23 days ago. There's an ongoing open discussion here where there are folks defending both sides: https://github.com/Yaffle/EventSource/issues/202
Anyway, a better title might be "event-source-polyfill displays popup about Ukraine in Russian timezones" or if its malware, then "event-source-polyfill affected by malware in Russian timezones"