If you've already divorced or are in the process of doing so, you and your ex likely aren't on the best of terms. You may feel a desire to yell at them whenever you see them or otherwise try to find a way to hold them accountable and let them know how you feel about the situation.
Shoplifting is a major problem for many retailers, but it is one that they might not address by chasing after the person they believe is stealing. They are concerned about the possibility of facing legal action if they chase someone who actually wasn't shoplifting. This doesn't mean that people are free to take what they want.