My windows lock and also have a security feature that stops them from being raised more then about 2 & 1/2 " when set. Mine are always set. But I am also next to a woods and most of my closest neighbors are elderly. Most wouldn't notice a window being broke if a little finesse was used.my house is old, as i have said many times...some windows on the first floor have locks, but most do not work.
so what i did was drill a hole into the upper sash, maybe about the size of an 8 or 10 penny nail.
then i insert the nail into that hole...
SOB's cannot lift up the window..
of course, smashing it makes noises.
by the way, that hole is easy to fill in with caulk, if you move out.