If the result this time is going to be the same no matter what they do, they should do the thing that discourages that result NEXT time.

It was probably very unfortunate for the first person subject to America's "we will not negotiate with kidnappers/terrorists" policy. But it reduced subsequent ones. Minneapolis is a write-off. It already burned, burning it some more will be unfortunate but inevitable. But society needs to showcase that they're not willing to negotiate with terrorists, once again, no matter how much of their own city they torch.