39 bodies were found in a trailer of a refrigerated lorry in Essex, England and victims are though of being smuggle either as immigrants or human trafficking. Similar minor cases happens all the time in UK. I think those sneakers must experience some social pain with their own countries, which have disappointed them so much that they wanted to escaped to another country they believe can bring them more happiness.  https://www.nbcnews.com/news/world/first-39-bodies-found-u-k-truck-repatriated-vietnam-n1092406