1. The accusations over anti-Semitism in Corbyn’s Labour, some legitimate and some overblown, are going to have a weird impact on how ethnicity, race, and religion are talked about in British politics if this goes on for much longer.
3. Politics is not rational, and what is “acceptable” is not very rationally police either. I suspect the Corbyn affair (I expect him to survive; he’s anti-fragile) will leave the grounds of debate radically altered—probably not in a good way.