I really don't feel bad for the LAPD, or any cops, they have more firepower, logistics and ammunition than David Koresh ever had. You'd have to be a f^*#$'n moron to mess with cops, especially LAPD. For crying out, any salaried cop or highway patrol can possess and use a machine-gun, so I don't see how those 'poor' cops are going to be outgunned.
SOL, outnumbered, one paintball per person should do the trick
The most effective and powerful weapon on the field is the sneaky b@stard, use sparingly!