Once again, you mention nothing about the rate or all the latent variables at play here. For example, other first world countries generally have stronger social safety nets, which means mentally ill people and aged out foster youth in those places are less likely to end up on the street in the first place compared to the U.S. We also have an issue at least in CA where jails are at capacity, and people are being turned out when they would have been held for bail, and often go on to commit more crimes while waiting to be charged for the first one.