Paris is a shithole (not just because it smells like sewage) with aggressive 'refugees' from islamist backgrounds from Africa that swarm tourists and pressure them into 'buying' stuff. i couldn't get out of that city quickly enough ~2013
Stockholm had no-go areas for Swedish police when i was there in ~2016 because of Muslim-only neghborhoods. there were 'protests' with huge plazas filled with 'refugees' (military-aged males who were already receiving gov't benefits...but not enough?) and it was pretty scary
contrary to my USA brainwashing from childhood, i felt WAY safer in Belarus ~2017 than i did in downtown Tampa FL last month. there just aren't cops anywhere, and the hoodrats are everywhere. people sometimes act like walking around Buenos Aires is even close to walking around Beirut Lebanon at night (i've done both; i'd take BsAs for the 6 neighborhoods i've seen here, annnnnnnyyyyy day). and for how much people love Dubai UAE, you can't even hold hands with a girl if you aren't married, and unless you're at a prostitute hotel, you have to have a marriage certificate to share a room with your partner. yet people go to Dubai all the time (too much human-trafficking of Filipino and Ugandan folks for my tastes)
it's like Mexico, anywhere away from the border; there aren't just cartel members stabbing you and robbing you in BsAs. i certainly wouldn't let a female friend walk alone in the city center at 4am, but i also would be much more wary of doing that in Los Angeles or Phoenix than BsAs. i see old ladies and single women walking around at midnight and they look local and unworried