We need to actually appeal to people sometimes, actually talk about difficult subjects that affect people
One side wants to talk about housing, public pensions, public healthcare, public education, salaries, discrimination against women and minorities, and work/life balance.
The other side wants to talk about immigrants being bad and evil, and about how trans people in films are turning their children gay
The events that led to the conquest of northern Africa by Arabs took place what, 1000+ years ago? You can hardly argue that "Arabs are colonialists" in modern times by judging 1000+ years old historical events, in the same way you probably wouldn't judge modern Greek people as colonialists because they speak an Indo-European language and Indo-European languages are spoken all over the continent of Europe and much beyond.