Gang signs in the NFL?

Here's an interesting story from the Los Angeles Times http://www.latimes.com/sports/la-sp-nflsigns16-2008jul16,0,1332501.story about the league hiring experts to see if players are throwing up gang signs during games.

"Guys come from all over the country, and who knows what they're really doing?" said Jaguars receiver Dennis Northcutt, who grew up in L.A. "People have got signs for their kids, signs for their fraternities. How do you differentiate who's really throwing up gang signs?"

There's a little truth to what Northcutt is saying. Players from my fraternity - the great Kappa Alpha Psi - throw up our sign when they make big plays in games. It wouldn't surprise me if that sign was some type of gang sign. So to me, there seems to be a lot of gray area here. If one of these "experts" sees what he thinks is a gang sign, do they dig into the player's background to see if he might be involved in gangs? After all, said player's hand sign could actually be a personnel grouping rather than a gang sign.

This all seems a bit hokey. What do you guys think?