In Griffith Park, CA, people would leave food for the wild animals. Pretty soon the wild animals would come close, and even eat out of people's hands. But a problem developed. If people didn't offer food, some of the animals would attack, taking the food. So the park put up warnings to not feed the animals.

This relates to human behavior. If we generously donate to the needy, once they become accustomed to it, it becomes a right, and obligation.

Similarly, illegal aliens, who have hidden in the shadows, are now coming out in the daylight and demanding rights that they are not entitled to.