Face mask is mandatory to use here due to the virus. It can protect yourself and others as well to not be infected if you happen to have a virus.
We need to follow the rule in order to stop the spread of the virus but some people are not taking it seriously. Its hard for them to abide and still doing what they think is right. This is the reason why the number of infected each day here is still thousands and it seems it will continue this way unless the vaccine is already available in the market.