Transport strike enters day four

[innocent]

Trains, trams and buses in Brussels remained at a standstill on Tuesday as transport workers extended a strike into its fourth day.
Transport chiefs admitted: "Not a single metro, tram or bus is going."
Staff are on strike for better protection from violent customers following the fatal beating of a supervisor when he was called to the site of an accident on Saturday.
Authorities have promised 400 extra police for the transport network but staff say it is not enough.