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Bogota's notoriously clogged downtown traffic saw more congestion than usual on Friday (March 9) as protesters blocked streets in demonstrations demanding better public transportation.
Police in riot gear forced protesters from a roadway and used tear gas to break-up one demonstration made up mostly of students.
The students blocked streets as they called for lower student fare bus tickets.
Some people say the service is poor.
The city authorities have said the protests are politically charged.
City officials have called on high school and universities to "calm" their students who are blamed for leading the demonstrations.