Religions are not typically too terribly tolerant of one another. But societies and laws should be tolerant, and that includes tolerance of religions — if not of their intolerance.
The tragedy of 9/11 was the result of a religion’s intolerance. It must not be responded to in kind. Either all religious institutions and symbols are banned from the site, or all are allowed.
President Obama is right (again).
(If it weren’t for the sensitivities of the believers among the victims’ families, I’d be for banning all cults from the site!)