Whilst applauding action against such gangs, and having rather limited sympathy for those involved in such gangs, arrest without warrant is definitely wrong. If the police couldn't get a warrant then one wonders what percentage are actually guilty. El Presidente needs to sort this out ASAP.
"El Presidente needs to sort this out ASAP. " - he is OG! Sometimes the problem is so bad that you have to take emergency action. That's what he's done.