The murder of the 43 is special. Have a look at https://www.bbc.com/news/world-latin-america-57498250 https://www.bbc.com/news/world-latin-america-57498250 for

The murder of the 43 is special. Have a look at https://www.bbc.com/news/world-latin-america-57498250 https://www.bbc.com/news/world-latin-america-57498250 for the context. In short: They were travelling back from a demonstration. Who is doing this: Looks like here it was police together with local criminals (in Mexico those are often enough not two groups, but one and the same), though the first investigation that concluded a specific version of this is completely unbelievable.