PHOENIX -- A California anti-gun violence movement makes its way to Arizona.
"Not one more!" yelled Richard Martinez, whose only child, 20-year-old Christopher Michaels-Martinez, was killed in the shooting rampage last Friday in Isla Vista, Calif.
"Not one more!" echoed the crowd of grieving community members.
But Martinez doesn't want your sympathy; he wants you to do something to stop gun violence.
Few fully understand that kind of pain and passion better than Caren Teves, an Arizona mom whose son, Alex Teves, was killed in that horrific mass shooting in a movie theater in Aurora, Colo. two years ago.
"You think, wasn't my child enough to provoke some sort of action?" said Teves. "America is standing up and saying, 'Not one more!' "
Already, a nation echoes the gut-wrenching call of that grief-stricken dad. In the last 24 hours some 300,000 of these "Not one more" postcards were signed.
About 3,000 were delivered to Arizona lawmakers including Sen. Jeff Flake.
"Oh, for the love of God, stop the insanity. Not one more," said concerned parent Mary Berg.
"You never know when you might have to hit the deck," said concerned citizen Jay Gittrich.
Flake was not in his office but these activists want him to know they aren't going anywhere. They want stricter gun laws and they won't relent until they get them.
"We're never going to stop every incident of gun violence and we understand that. What we can do is we can limit access to firearms for people who are mentally ill and for people who are criminals, and that's a good start," said Daniel Hernandez.
He survived the 2011 Tucson shooting rampage that left six dead and 13 injured, including then-Congresswoman Gabrielle Giffords.
He wants congress to know this movement is here to stay.
"Even though it's been three years after Tucson, two years after Aurora and one year after Newtown, people are still talking about this, and they still feel passionately and overwhelmingly support the issue of background checks," said Hernandez.
Flake’s office released this statement late Friday:
"In order to ensure background checks include those with mental health issues, Sen. Flake is an original cosponsor of legislation that would assist states and federal agencies in providing mental health records to the National Instant Criminal Background Check System."