"apolitical" simply means "the boss's politics", nothing more. When a CEO tells you to keep politics out of the workplace, he means do not disagree with him. A worker talking about his kids being bullied for being nerds is not political, a worker talking about his kids being bullied because of gender issues... Keep those politics out of the workplace.
Same here. There's politics you can freely discuss - Canada being a "police state" and "mistreating" "protestors", European hate speech laws etc. Perfectly fine and apolitical! Talk about something a little too uncomfortable for Americans and all of sudden, hey! Keep those politics out!