Washington (AFP) - US President Barack Obama denounced the country's epidemic of gun violence on Saturday and renewed a call for tougher controls on military-style weapons after yet another deadly shooting, saying "enough is enough." The latest bloodshed came on Friday when a man entered a family planning clinic in the state of Colorado and allegedly opened fire, killing three people, including a police officer, and wounding nine others. The motive of the suspect now under arrest was not yet known and police were to interrogate him Saturday.