That seems like a bad idea. Many people will die without any alcohol. Forcing people inside and then stopping the sales of cigarettes seems like it would create more agression in the short term.
[0]: https://www.thesouthafrican.com/news/why-alcohol-sale-banned...
https://www.medscape.com/answers/819502-79121/what-is-the-mo...
"The mortality rate from severe alcohol withdrawal and delirium tremens (DT) historically has been as high as 20% if untreated. Early recognition and improved treatment has reduced the mortality rate from DT to approximately 1-5%"
So this means people either die or go to emergency care with severe symptoms that require hospitalization, which obviously is to be avoided at a time like this.
Now I don't know if that link exists and in fact I suspect it could be the opposite, as many people become more aggressive the more they drink.