Who is Ousmane Sonko, Senegal opposition leader convicted of corrupting youth?

Senegal braced for a second day of unrest on Friday after a jail sentence for opposition leader Ousmane Sonko led to one of the deadliest days of violence in recent memory. Nine people were killed in clashes between riot police and Sonko supporters on Thursday after the presidential aspirant was sentenced to two years for corrupting youth, a verdict that casts doubt on his chances of running for president next year and which the opposition says is politically motivated. FRANCE 24's Sam Bradpiece reports from Dakar, Senegal.