The letter's message was eminently clear, "From today, all bus drivers must give us a special contribution of their salary if they do not want attacks against their lives. Signed: Barrio 18."
One of us there took the paper to the bus route manager. The amount of money requested was exceptionally high for each driver to have to pay. I don't remember well if it was maybe $200 or $300. Immediately our boss called a meeting and the following day we spoke about it.