I agree with Jerry's insight: a lot of vocal gay-bashers are actually very closeted homosexuals. This "solution" of rounding them up and fencing them is is just the kind of broad deranged thinking that emerges from fear. Being gay, I've had encounters with individuals who'd beat me up for being transgender and queer and then find out some time later that they were on "the down low" elsewhere. It's their own internal clash between their desire and their strict false morality. The love and hate conflict they transfer onto the most visible example - on-the-street gay people.
Long time ago , me and my friends liked to confront them with mockery and outrageousness, but now I have more of a compassion for their internal struggle. (But at a distance.) They are suffering self-loathing. It's mostly bark and no bite, until it reaches a larger threat.