Invoke the power of prayer

In a New York Times story today, 10/2/17, about the mass murder shootings in Las Vegas, five musicians were quoted invoking the power of prayer.  One respondent, a former strong 2nd amendment advocate, demanded a change in the gun laws, i.e. making them stricter. It seems to me that these two impulses might dovetail perfectly if applied in a meaningful way.  After praying for the souls of the dead and that the hearts of their loved ones might be healed, congregants who believe in the power of prayer might beseech the God they worship to ask their religious leaders to speak out mightily and ceaselessly to force Congress to ban assault rifles, as a start.  Jews, Catholics and Protestants all believe some wording of the commandment: Thou shall not kill. I imagine Muslims, Buddhists, Hindus and other religions have similar strictures.  So why aren't all the religious leaders in this country publicly exhorting the government to change the laws as to who can own what kind of — and how many — guns?  The politicians who are in the pocket of the gun lobbyists can easily reject pleas from politicians on the other side who'd want to enact common-sense gun control laws, but they'd have a much harder, maybe impossible, time mocking a wide array of religious leaders pushing for an end to murder by gunfire.  You'd think these men and women of the cloth, students of God's word not to kill your fellow human being, would rise to the challenge at their own initiative.  But I haven't seen any sign of this. Maybe we should all pray for them to see the light.