The Boston City Council held a hearing yesterday on a proposed law that would ban the wearing of masks meant to conceal a person’s identity in public, The ban is in response to violence against police by masked protesters during the so-called Straight Pride Parade event earlier this year. The law is being proposed by Councilor Timothy McCarthy who says the ordinance would cover wearing a “mask, hood or other device” designed to “conceal a portion of one’s identity” on public or private property, but not apply to “traditional holiday costumes" nor a variety of professional, medical and religious exemptions. Is this a good idea?