I think Derek has watched too much GoT, lol
I reported a dog fighting ring to West Midlands Police last year, seems they are all barking mad - I later found out during Christmas from other people at a park, a few of them are involved. Hence still going strong (skeptical)
Derek's got the right idea or put them in a cage with a hungry lion.
People involved in Dog Fighting should be turned into dog food. Stake them to the ground and let the dogs eat 'em alive.
Please don't leave your dog unattended outside shops or in public for long if at all as many are taken and used as bait. If you're thinking of rehoming your dog online for free, please contact a dogs home or animal charity and they will make sure he/she go to a good home. Many people procure dogs this way and use them as bait. Sad to see its on the rise again but good that RSPCA are creating awareness. Thanks OP!