Interesting story. Yes they can be very deadly and they are a growing problem here stories of attacks on people by urban deer are getting more frequent. There is a news story here
http://www.telegraph.co.uk/earth/wildlife/7429164/Urban-deer-a-growing-problem-for-UK.html but here in the UK it is illegal to carry any firearm without vetting and issuing with a special permit. It's also illegal to kill deer without a licence (I think) probably why we have so many of them. You also have to kill them quckly, painlessly and humanley by shooting them in the head. There are a lot in the woods and forests around where I live but I have yet to see one on the streets.
