In Colombia, thousands of people have marched to condemn the deadly car bombing that killed 20 police academy cadets on Thursday. <br />''<br />''The protest was held in several cities around the country, with marchers in white waving Colombian flags and chanting slogans like "cowardly killers" and "life is sacred."<br />''<br />''<span style="color: #222222;">The government and some Opposition leaders joined the march and walked through the Colombian capital.</span><br />