As much as I disagree with the gun culture in the United States, there's something to be said for thinking twice before you commit a crime because the victim might have an anti-aircraft gun for home defence. There is a recording on youtube of a senior man in Texas who calls 911 when he sees two teens robbing his next door neighbour. The police don't come fast enough so the man takes his shotgun and guns down the teens, then calmly gets back on the phone and tells the 911 operator that there is no longer any hurry for the police to get there, as the robbers are stone dead and not about to run away.
As far as the acid goes, I have a friend who is from Bangladesh and he was attacked with acid when he was a teenager. Thankfully they missed his face and got part of his chest and his arm. The scar is grotesque.
These people need some old school "string him up in the village square and give everyone a billy club" treatment.
That's totally how it would be if I ran my own country, by the way. Rapist? Murderer? Other heinous crime? You're getting hung by your feet a meter off the ground in the town square and everyone gets a weapon. If you survive for sixty minutes you have the privilege of spending the rest of your life in jail. Otherwise, too bad for you.
There's also eye for an eye as an option. Say you rape somebody? You will get raped with a meter long 12cm diameter ***** relentlessly for 24 hours. Then you go to jail.
I'd call this country "Dont****aroundistan"