Sorry you had to go through that and I agree with you. We had a small homeless camp in our town. As luck would have it, they chose a plot of land that was tied up in probate and the ownership was uncertain. The city couldn’t find the owners to make a trespassing charge.
The Police Chief made public announcements to not bring them food, blankets etc. The police were very visible and they made many offers to transfer them to shelters.
They made life uncomfortable and they finally left.
Put them in a metal warehouse with heat. Give them rice and beans to eat. Give them all the Thunderbird they want. Cheap. Problem solved.