Something must be done. Help them find a way thru this. Don't just criticize, offer acceptable alternatives. Breed Specific Legislation. Not everything they propose is outrageous.
Leash laws are very reasonable.
Compliment them for their concern for public safety. Commisserate over the difficult position they are in. When they are soothed by your tone, perhaps they will be in an open frame of mind. Give them sensible information. You can't make anybody do anything.