ROANOKE, Va. -

Groups targeting gun violence took their support for background checks to the Roanoke office of 6th District Congressman Bob Goodlatte Tuesday afternoon.

They delivered more than 1000 post cards with the words "Not One More," a message inspired by Richard Martinez, a California father whose son was shot and killed in May.

They also expressed their support for federal legislation that would require background checks for all gun buyers.

Mary Croft is a member of Moms Demand Action for Gun Sense in America. "It is the one basic thing that we can do to protect the most people," she told WDBJ7, "making sure that guns stay out of dangerous hands. And we're protecting the Second Amendment by doing so."

More than a dozen people took part in the event, including Andy Goddard. His son Colin is a survivor of the April 16, 2007 shootings at Virginia Tech.

"This is not anti-gun," Goddard said in an interview. "This is purely a safety measure that would not prevent any law-abiding citizen from getting a gun, but it would make it more difficult for people who have no legal right to own a gun."

Goodlatte wasn't in his Roanoke office when the groups visited. But in a written statement he said he does not support a universal background check, "because it is too restrictive on the rights of law-abiding citizens to sell their property." "There are other ways to help reduce gun violence," Goodlatte said, "including enforcing current background check laws.”