Facial language fails with masks

Today I learned it is very difficult to scowl wearing a mask and have people get your message. The church I attend is still closed, so when we're in Columbus I attend St. Andrew Catholic, which is only a mile away. This has never happened before, but there were 4 men chatting 2 by 2 in the entry and in the back of the sanctuary. Usually, in my experience, Catholic churches are very quiet and people go there to worship not to catch up on the local news. I love the architecture, but the acoustics are poor with a lot of echo, so having someone talking (that sound seems to travel) makes it especially difficult for others to hear. I tried turning my head and scowling at them, but they either didn't get the message or they figured out I was a visitor and they had rights. I would like to tell them that  many churches in the U.S. are not open and they should appreciate what they have.