I'd be ok-ish with them staying legal, if only they could be made mandatory for a few select individuals, under pain of death by slow torture.
Namely cherie blair, angela merkel, one of my next door neighbors to name a couple
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Ban the burka generally IMO, it is not contributing to the good of anything, or anyone despite how they might think so due to religious psychological conditioning/brainwashing and make it mandatory for any ugly people going out in public.