I read this as meaning he should be set adrift on a lifeboat or somesuch. I do feel a proxy anger towards the murderer, but I'm not a fan of making legally annoying people just disappear because that quickly becomes the go-to solution in tough times.

Another reason that I don't want to just forget about that guy is because he's not a bizarre exception, but partly the product of xenophobic nationalism churned out by some political actors over decades for fun and profit. Immigrants can be conveniently scapegoated for issues as diverse as unemployment, national security, industrial policy, and abortion. The increasing fragmentation of media consumption eventually results in epistemological detachment.

Are you implying that's not already the go-to solution in tough times? Even the United States disappeared people after 9/11. Granted, they reappeared, but still.