The tenant should not have had to be evicted. He should have left voluntarily when he could not pay the rent or otherwise did not meet the landlord’s criteria for remaining. That does not excuse shooting him, and it would not surprise me if the landlord was in the wrong also (particularly removing private property before the date on the eviction notice), but the tenant was morally very much in the wrong.
The law is the law. I have also seen bad and illegal evictions in my time. The larger point stands. The law said the tenant had until August 23rd to leave the premises. The landlord was wrong in entering the premises prior to that date.