There would be outrage but it wouldn't stop it. The anti-porn movement is strong, mostly because the far right(yuck, it's nudity) and the far left(it's abusive/we can't objectify women) agree on it. It won't be quick but in 20-30 years porn will be gone or at least very heavily restricted. What else will the government go after? It's hard to say. The government can't mind its own business.
These are issues that people my age and zito's have no problem with.
I think you give too much credit to the left in this instance. Female porn stars are mostly openly feminists outside of their job. Porn would be no different than prohibition. Maybe it gets banned for a few years, an underground market will surface for a while then it will just get legalized again.