in Texas? The opposition to gay rights (including marriage) is very common in the southern states, especially in my state too, but I don't think they are growing because they hold the belief for many years, usually inherited from parent or families who opposed to gay rights. I don't have problem with my university and some students know that I'm bisexual - no bullies or backfire. There is no public anti-gay movement at my university, but probably for small private group that we don't know.
My statement is opinion, reflect to my experience, despite about strong anti-gay presence in Alabama, but you have other experience. When gay marriage start rise in the state like California - the anti-gay movement will be increased for short time until gay marriage passes and the ballot on gay marriage ban fails, so they will start peak off and focus on other issues like taxes and debts. That's very normal for movement and the protest - I'm not concerned because they are free to protest as we could fight. The recruitment has become more crazy from liberal and conservative right now, also recruitment of students on anti-gay rights are usually when they don't know about gay rights, or oppose to gay rights.
The philosophies can change over time - back in late 1970's, my mother was conservative and opposed to gay rights. She didn't loosen it up until 1988 and became mild liberal with support for gay rights, but she's middle on fiscal issues. Today, majority of young adults (18-30) support gay marriage (over 60%) but less for older groups.