Telling someone to "not dress provocatively" harms their identity and right to self-expression. It devalues them as a independent human being, reducing them to perpetual victimhood. The crime against which it "protects" is heinous and life-altering and, sadly, our culture still has a somewhat permissive attitude towards it in some situations (e.g., on college campuses).

If anyone's right to identity and self-expression is exemplified by keeping wallet and keys in their car, then, yes, I suppose they should certainly assert their rights by keeping valuables in their car!