Well, at first my countrymen used to put them in special wards to „care“ for them and sterilised them. To keep them out of the public eye and genepool. When that got to expensive, they killed them by poisoning and the like and reported the „sad“ death home. When that became to work intensive, they were killed and burnt along with other „undesirables“ sometimes the burning and killing were the same process, you know, to save time.

Oh, and before I forget: these were not only the physically and mentally feeble, but also the people no one in town liked, so a few fellows decided an easy way to get rid of them would be declaring them deranged and shipping them off - out of sight out of mind you know.