Kenya: Why have police stepped up action against young protestors?

Protesters in Kenya embarked on yet another round of demonstrations against a new finance bill that seeks to introduce new taxes. Police appeared overwhelmed in some parts of the capital, Nairobi. Demonstrators were seen approaching the parliament complex, where fire could be seen. Why have demonstrations darkened? Also Nigeria's Centre for Disease Control expresses particular concern over this year's outbreak of cholera. Over 50 people have died from the disease.And a new study in Sierra Leone says political discourse can have a devastating impact on mental health. Presenter: Audrey Brown Producers: Charles Gitonga, Sunita Nahar, Rob Wilson and Victor Sylver Senior Journalist: Karnie Sharp Technical Producer: Chris Ablakwa Editors: Andre Lombard and Alice Muthengi