I'm not sure if Platy is just trolling or REALLY sheltered with his "lets just show up and they will go away" bs. Some areas of Paris are VERY rough and hostile, especially to women.
A friend of mine was there with her husband, and while they were walking around, a group of dudes started insulting her and her husband because she was dressed "like a whore" and they started taunting the husband, talking about him "walking his dirty bitch", husband is of Tunisian descent, grew up in Paris and later moved to Quebec and thats where he met her. They pretty much almost ran away on foot because they feared for their safety.
This happened in 2005 or so.
I don't think I would agree for the city proper though there is a handful of pockets with the reputation of being rough in the upper north east quadrant, for either being a bit seedy or a junkie spot. There's parts in some suburbs that have bad records though, I used to work in a place where several colleagues were mugged and/or carjacked and a public furniture enthusiast was stabbed dead -apparently for the "suspicious" behavior of taking photos- in a nearby infamous neighborhood.
But as always with this type of stuff, your mileage may vary and nobody is safe from crossing paths with petty thugs even if it's more the exception than the rule.
Platy is being dumb as a bag of rocks, though, I guess we can all agree with that. Those are day-to-day issues and the result of people with fairly entrenched beliefs. Pulling some big stunt is good in a media sense but doesn't do anything to solve it.
The source is France 24. Basically a French version of NPR.
To be perfectly precise : France 24 is a public-funded news channel mainly made for international consumption (translation in english and arab available).