We chant the Hare Krsna maha-mantra because it is said that by chanting these sixteen syllables all the influence of the Kali will be destroyed. Under the influence of Kali, we are becoming totally degraded. Illicit activities such as meat eating, gambling, intoxication and illicit sex are rampant in the world. Day-by-day, we become pulled down more and more, and degraded more and more and we sink deeper into the swamp of suffering. But, the chanting of Hare Krsna can liberate us from all this suffering. Therefore we must chant that name of Krsna as recommended in Kali-santarana Upanisad: Hare Krsna Hare Krsna Krsna Krsna Hare Hare, Hare Rama Hare Rama Rama Rama Hare Hare.