If you served free meals to the wandering poor during 1930's Depression Days, the needy 'tramps' as they were called, chalk-marked the sidewalk in front of your house with an X, so others would know.
Today, the caring practice of providing free meals at home to just anyone who might be perceived as a 'tramp' could be risky.
The same goes for other acts of kindness.
When, out of the goodness of their hearts, my parents hired a struggling out-of-work stranger to wash windows for a business they worked desperately to build during those Depression Days, they had no idea that years later he would be found, convicted and put to death because he was a serial killer, including several nurses in Chicago and one in my hometown.
The very thought of all this, gives pause to acts of kindness.
There obviously are reasons why, in today's world doors are kept locked and security devices installed, for safe keeping.
Many good-hearted folks now give money or volunteer in secure places to help others.
I'm convinced that the same precautions should have been taken in the 1930s, all of which is sad commentary on acts of kindness.