Purely in terms of America, it's a huge deal. Be warned, this is a downer of a story, but since you asked:
I grew up in a (stereotypically redneck) city in the middle of the country; there were literally 100,000 people living there, and the easiest way to answer your question is with a story from 9 years ago: My high-school, the biggest school in the biggest school district in a big town, refused to allow us to start a Gay Straight Alliance (an after-school club, like swimming or yearbook). We sued them, said it was a violation of our Constitutional rights. The court held that if any club is approved by the school, then the GSA must also be approved.
And then the school principle cancelled all the clubs. ALL of them. When there was an outcry against that, the entire school district, about 50 schools, cancelled all their clubs too. We sued again, the Westboro Baptist Church people came to hate on us; the city gave them a permit On School Grounds to protest and call us all f**s. Requests for permits for the giant public park across the street to hold counter protests were denied. When people protested anyway, the Westboro people threw things and threatened to kill them, and the cops came and mace'd the people on our side, then arrested them.
At the end of the day, the club founders who were actually gay won millions of dollars in damages, but 1 person was lynched that year, and plenty of us got the s**t kicked out of us too. There are bullet holes from an AK-47 in the side of my parent's old house; when we called the cops, they looked closely at the wall and said 'there are no holes, you must be dreaming'.
Never think this horrible hate c**p doesn't happen; in America, at least, all you have to do is take a wrong turn its not only ok to attack gay people, its ok to attack straight people like me who try to support them.