I don't think calling the rangers will help.. probably prompt them to close the range more..
I'd say stop them yourself, if things get out of hand call the rangers
"It is vain, sir, to extenuate the matter. Gentlemen may cry, peace, peace; but there is no peace. The war is actually begun! The next gale that sweeps from the north will bring to our ears the clash of resounding arms! Our brethren are already in the field! Why stand we here idle? What is it that gentlemen wish? What would they have? Is life so dear or peace so sweet as to be purchased at the price of chains and slavery?" - Patrick Henry