The poor have nowhere to grow their food

The poor have nowhere to plant their crops or graze their cattle...

Universal (stipulated) law is a falsehood, in as far as premeditated rules are concerned. No situation is exactly as before and we cannot say for certain, in any prescribed situation what action is the correct one, and to what extent it may be criminal.

It is better to take action in response to an event, or crime, rather than to declare beforehand what action will be taken. For example, to make the declaration that if someone is to sell their labour then this will be met with a fine is not the right approach. Nor even, is it right to indicate that trespass will be punished if someone violates entry into land which is claimed by others. It is better to react to the situation to see what damage has been done; the intruder may have beneficial intentions!

A violent attack is not excused simply because the victim was in the wrong place at the time, although it may mitigate.

Property rights (the extent and nature of) are a matter of opinion, a negotiation. Who would want to keep everyone away from the land? Where else can we plant our crops?