The workers who left the company while still collecting a paycheck for 90 days are essentially stealing, and the ones who stripped the premises were also thieves.

I agree it was poor management to not oversee what was happening.

This is why management does not give advance notice of layoffs. Usually, when a person gets laid off, their first notion of it is a security guard is there to help them fill a box with their personal items and escort them out.

Nobody likes this, but it's the inevitable result of a bad apple now and then. For example, most people aren't thieves, but banks still need security guards because there are thieves.