Greece, Italy, Spain and Portugal all have their own version of this (to a more or less limited extent) by virtue of being the Southern most countries in the union. It's an impossible position to be in and no matter how they try to deal with it it never works to anybody's satisfaction. The Greek coastguard seems to have a lot to answer for based on the evidence presented, but I somewhat doubt those 'Western countries' (of which they consider themselves part) are going to take action. Because if they did those Southern states could just throw up their hands and say 'if you know how to deal with this then you will have to show us'. And nobody is willing to take that up. Long term the only way to deal with it is to arrange for economic parity with the countries on the other side of the divide and that's not going to happen in the next 50 years, maybe not even in the next 100. But it worked well for Mexico and the United States right up to the point where Trump came to power, then it all went to pieces. But I do believe that that is the only way out and until then we will see one tragedy after another.

Europe has a strong xenophobic streak running through it at the moment, in each and every country there is a right-of-center party either ruling or gaining strength to the point that people are seriously worried they will be able to unite. Most of these campaign on fear-of-the-other and immigrants are obviously a very convenient scapegoat. Housing shortage, the social contract that has become unstable, school quality and so on, each and every problem is traced back to immigration, no matter how ridiculous the link. And it gets lapped up as gospel.

I'm all for getting to the bottom of this and bringing the Greek coastguard leadership as well as anybody that was on that boat to justice. But I cynically doubt that this will happen, and that even if it should happen that something fundamental will change.