that's right arien,nowhere is safe.you can't help but let the kids go to these if you are in working class and strive to make ends meet.
But it's the parents duty to build up the environment where kids will open up to you and notice any unusual behaviors.

I don't know how far this is true, but i heard that in daycares they use sleeping pills coz they got so many kids to look after.
I know how hard it is to look after two kids but imagine a whole lot..