How anti-Vietnam War activists stopped violent protest from hijacking their movement

http://uslaboragainstwar.org/Article/77635/how-anti-vietnam-war-activists-stopped-violent-protest-from-hijacking-their-movement?link_id=26&can_id=177fd532305cd61e6df1a6e9255f9eb5&source=email-uslaw-headline-news-63-empire-abroad-empire-at-home-2-2-2-2-2&email_referrer=uslaw-headline-news-63-empire-abroad-empire-at-home-2-2-2-2-2&email_subject=uslaw-headline-news-68-act-today-to-stop-saudi-arms-sale-weekly-news