Right, because you can't see one of them wearing both a hijab and a niqab.
And for the record, those are Muslim protestors at Birmingham schools in England. The ban of those protests only happened just last month.
https://www.cnn.com/2019/07/02/uk/birmingham-lgbtq-school-protests-gbr-intl/index.html
(And look, I even linked you a CNN article, so you /have/ to believe it now.)