CBNNews.com- Do Americans have a right to own and keep their own guns? The Supreme Court may be about to answer that question in the first gun case it's taken up in 70 years.

The case revolves around Washington, D.C.'s 31-year-old handgun ban, and it could have a broad impact on the rest of the nation.

Gun control advocates in D.C. say guns are too dangerous for every home to have them.

"Guns inside the home are more often than not used against people who actually live in the home," D.C. Mayor Adrian Fenty said.

But some D.C. residents say they're defenseless without guns in their crime-ridden city. And they're not the only ones forbidden to bear arms.

A group of Texas State students are pushing for the right to carry guns on campus to prevent future Virginia Tech-style massacres.

"We can carry in the banks, into shopping malls, restaurants, grocery stores, and-for self-defense purposes. But when we step onto the campus, we're defenseless," said Mike Guzman, a 23-year-old economics major at Texas State University-San Marcos and a former Marine.

Charl Van Wyk told CBN News he thinks parishioners should even be carrying guns to church. In 1993, he single-handedly stopped a terrorist group who attacked his Capetown, South Africa church, planning to massacre everyone in it.

Van Wyk said, "They started shooting with automatic rifles indiscriminately into the congregation." He shot back at them and they fled.

"I'd actually hit one of them in the church and that's why they had run out," he said.

Van Wyk says massacres like Virginia Tech show gun-free zones can be some of the most dangerous places on earth.

"Atrocities like this where many people get killed only happen in gun-free zones," he said. "How often do we hear of multiple murders at gun shows or at police stations or at shooting ranges? They don't happen at those places."

Should the Supreme Court come down on the side of gun-owners, it'll be a landmark moment clearly establishing once and for all Americans' right to own their own guns.