Make 'em laugh

Or else...in Columbia:

Two circus clowns have been shot dead during a performance in the eastern Colombian city of Cucuta, police say.

The attacker jumped into the arena and fired before fleeing, police chief Jose Humberto Henao told Efe news agency.

Local reports say the audience of about 20 people, mostly children, thought the shooting was part of the show before realising both men had been killed.

Last year, a prominent circus clown, known as Pepe, was also shot dead by a unknown assailant in Cucuta.