Hundreds of thousands of people rallied in cities and towns across Greece on Friday to demand justice on the second anniversary of the country’s deadliest-ever train crash, and striking workers grounded flights and halted sea and train transport.

Two years after the country’s deadliest rail disaster, many are still demanding greater safety and accountability.

A protest over the Greek government’s response to the nation’s largest ever train crash turned violent on Friday as Scores of youths hurled rocks and gasoline bombs at police.