MEXICO CITY -- Teachers angry over the passage of a national education reform partially blocked the main approach to Mexico City's airport Thursday, forcing many passengers to leave their cars and rush through the streets on foot to catch flights.
Hundreds of police guarded the airport to prevent the members of a dissident teachers union from blocking other entrances. Airport management advised passengers to take alternate routes to the airport, including the subway.
Airport administrators used federal police pickup trucks and other vehicles to transport passengers stranded by protesters.
Some airlines, including Aeromexico and Interjet, announced they would not charge any fees to people who changed their travel times or missed flights.
The blockage caused traffic to back up for miles (kilometers) on one of the city's main highways, increasing simmering public anger at the weeks of teacher protests.
The teachers, mainly from poor southern states, are protesting a just-approved measure that could break union control over the public education system.