Drugs aren't exactly decriminalized in Portugal either. They'll still throw you in jail if they believe you to be a trafficker and may still fine you for simple possession. Portugal also never really had a drug problem even before they "legalized" drugs, so it's kind of like comparing many European countries (or Australia, Canada, etc.) with the US on mass shootings. Most of those countries didn't have a "problem" (the US doesn't really either, but that's a different story) prior to their post-WW2 gun laws.
The U.S. isn't even top 10 in mass shootings when only compared to Europe. This from 2015 and back so it's probably tilted since then with the Vegas shooting.
Drugs aren't exactly decriminalized in Portugal either. They'll still throw you in jail if they believe you to be a trafficker and may still fine you for simple possession. Portugal also never really had a drug problem even before they "legalized" drugs, so it's kind of like comparing many European countries (or Australia, Canada, etc.) with the US on mass shootings. Most of those countries didn't have a "problem" (the US doesn't really either, but that's a different story) prior to their post-WW2 gun laws.
http://www.emcdda.europa.eu/countries/drug-reports/2018/portugal/drug-laws-and-drug-law-offences_en
The U.S. isn't even top 10 in mass shootings when only compared to Europe. This from 2015 and back so it's probably tilted since then with the Vegas shooting.
https://www.investors.com/politics/editorials/sorry-despite-gun-control-advocates-claims-u-s-isnt-the-worst-country-for-mass-shootings/