Greta Thunberg joins massive French student protests as cars burn, police fire tear gas

Climate activist Greta Thunberg joined student protesters in France on Tuesday after weeks of violent confrontations with police, thousands of arrests and widespread school closures over demands for education reform.

The 23-year-old Swedish activist appeared outside a high school in Saint-Denis, north of Paris, where students were demanding more teachers, better facilities and shorter school days, Reuters reported.

More than 6,800 people have been detained since the protests began in September, according to French authorities.