St George City annexes gravesites without notification

When I read this and was very concerned . I don't understand how they could take away peoples property. When you purchase a piece of property ( they are expensive) it belongs to you or So I thought. People live all over the country these days and when they die they have a place to be buried. I think they would have to provide a place to those that do not read this.  I would like to find out how this could and would be done. We have burial plots in two different grave sites in SLC. They are bought and paid for .  Some people have paid payments over time to purchase those pieces of property. Just saying  it feels like stealing to me. -