Desperate pleas for a stop to the gun massacres plaguing the United States ring out during President Joe Biden's visit to Uvalde, where he prayed for the 19 children and two teachers slain by a teen gunman in the small Texas town. "Assault weapons are not for the public," insists Air Force Veteran Sam Arredondo, while San Antonio resident Crystal Camarago says she's in favor of stricter gun laws. "I don't think it should be that easy for an 18-year-old kid to go into a Walmart and purchase a weapon," she adds. IMAGES AND SOUNDBITES