Kenyan police have fired teargas and water cannon to disperse protesters as thousands took to the streets to mark the one-year anniversary of anti-government demonstrations that left dozens dead.

Youth-led protests against police brutality and poor governance have erupted across Kenya, with thousands gathering in Nairobi.

Television stations were forced off air and thousands flooded the streets in Kenya to demand President William Ruto's resignation a year after similar protests and the questionable death this month of a teacher.