Tolerance is a 2-way street, and I totally reject your comparison, not least because it is radical Islamic regimes that are executing gay people now in countries like Iran, Saudi Arabia etc. Allowing the regalia of radical-Islam, like the burqa, in schools will only encourage radicals to make more demands, culminating in a demand for Sharia law like in the UK where a Times poll found 41% of Muslims in Britain wanted it. That's part of where the UK went wrong - they allowed a them and us culture to develop where Muslims and others could mark themselves out as different with burqas, separate schools etc. This contributed to societal-division. Gay people don't mark themselves visibly out as different.