Are face masks useful?

Initially most experts considered face masks of no-good use. Then came mandatory face mask rules in many countries. There is a big difference in use of face mask use between countries. 

https://uk.news.yahoo.com/face-masks-europe-face-coverings-uk-laws-144339504.html 

Here are present COVID fatality rates per 100 000 individuals in these countries. Face masks do not seem to reduce fatality. 

https://coronavirus.jhu.edu/data/mortality