It is apparent that lots of "old people"dare not move out of the house when night falls,why aren't we all doing something to address this sad situation that society has created?

I personally know old folks who batten down the hatches come night fall,these same old folks laid the ground work for all we have today,yet they sit in fear in their own homes night after night.
This is particularly bad for those who live alone.
Any ideas of how to change this?