There has been an increase in the number of people who were arrested after being denied permission to buy firearms at Virginia gun shows. In 2011, 10.6 % of the people denied permission to buy firearms were arrested on related charges. The figure grew to 12.4 % in 2012. That’s a 27% spike in one year. VCU criminologist Thomas Baker calls the recent trend a positive sign. Baker does note potential buyers who fail a background check at a gun show can still buy from private sellers. A federal law requires only licensed dealers to run a background check.