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The best way to become good at using emacs is to practice and play around with it . The violence and brutality they had witnessed and in some cases participated in undoubtedly helps to explain why the Los Angeles police consider the Mara Salvatrucha the most dangerous gang in the city ; as expressed by one member of Mara Salvatrucha , " the young dudes here keep the war going " ( cited in Rodriguez , 1995 ; see also Wilkinson , 1994 ) . The Center for Nonviolent Communication is a nonprofit organization that seeks to strengthen people 's capacity to compassionately connect with and relate to others through nonviolent communication practices . Nanotechnology is an emerging field of endeavour which aims to understand and exploit the science of the very small . To do nothing is to fail , individually and collectively , to shoulder this responsibility .