Clashes rage on in Colombia between the military, farmers and state workers protesting against government spending policies.<br/> <br />Demonstrators threw rocks at police who fired teargas to try and control the increasingly angry protests.<br/> <br />Universities have now joined the growing national strike.<br/> <br />In Bogota, authorities accused the Marxist revolutionary group, FARC - of infiltrating the protest.<br/> <br />Defence Minister Juan Carlos Pinzon said the government would address the concerns of those with legitimate complaints - farmers and students.<br/> <br />But he warned that FARC guerrillas, vandals and criminals had joined the protests and were serving their own 'dark interests.'<br/> <br />With dozens of roadblocks snarling traffic and increasing violence, Pinzon vowed to restore law and order.<br/> <br />(SOUNDBITE) (Spanish) DEFENCE MINISTER, JUAN CARLOS PINZON, SAYING:<br/> <br />"We'll increase the military's presence in certain cities to provide the confidence and the peace of mind that all Col
