I dont think we can blame alcohol or anything for a persons actions. People know what they are getting into when they make these purchases. We can say Money , love, and a long list of other things can cause violence. People over react all the time.. accidents happen but to blame it or to center it on thing is wrong..
For the health of people I would say yes, a tax would be a good idea. I dont think think a slump in crime would happen.. Saddens me to say this but especially in America.. I love my country but my people we dont make alot of sense until its time to kick someones ass.. even then its a lil blurry.. (lil humor) But if we tax the hell out of one thing that welcomes taxes on ANYTHING the government would see fit as UNHEALTHY... And we like our right to choose too much so that wont happen.... We did go to war over Tea a long long time ago