Earlier quoted context omitted.
Mostly the former probably, but for many it's the latter as well. Malls historically were a central gathering point where many people burnt an entire day just shopping around, grabbing lunch at the food court, and just in general "hanging out". It's where the term Mallrat (and the move _Mallrats_) gets their naming from. In more recent years it's not as important and the day trips probably aren't there, but many stil…
To me, a lot of these functions seem like things that could easily be available to the individual (like AC) or should be provided to the general public, not just in malls (like being a "safe area"). But thank you, that does clarify it indeed. :)
This means "I can leave my teenagers there without worrying". Malls have private security. They can (and do) escort people out who are doing things that are bad for business. That includes all sorts of things that are legal (and should be legal!) but aren't appropriate in that context. Other things are illegal but impossible to eliminate from public life (and public parks). Many of those things are things you'd worry about your teenager being around.
Like public drinking. Drug use (legal and not). Misdemeanor violence. Sexual harassment from random citizens (creepy middle aged people with panel vans). Public sexual conduct (sex in the bushes or in the bathroom stall).
In other words, "safe area" is code for "free low-grade babysitting".