is he involved in any political activities?
No, but endorsed politicians like  Barack Obama, Democratic Senator Tom Udall through his writing.
George R. R. Martin
While he did not endorse Barack Obama in 2008, Martin endorsed him for re-election in 2012 calling Obama the most intelligent president since Jimmy Carter. In 2014, Martin endorsed Democratic Senator Tom Udall of New Mexico.
who went to the wall with jon snow A scouting party is this character part of a show? Yes, Jon Snow is a fictional character in the "A Song of Ice and Fire" series of fantasy novels by American author George R. R. Martin, and its television adaptation "Game of Thrones". what is the nature of this character? He is introduced as the 14-year-old illegitimate son of Eddard "Ned" Stark, Lord of Winterfell, and half-brother to Robb, Sansa, Arya, Bran and Rickon. Jon is described as having strong Stark features with a lean build, long face, dark brown hair and dark grey eye. who is his mother? The identity of Jon's mother has created much speculation when was the tv show first aired? April 17, 2011 what is the major theme of this show? It is the battle between good and evil which locations were the episodes filmed in? The primary location was the Paint Hall Studios in Belfast.  Exterior scenes include Sandy Brae in the Mourne Mountains,  Castle Ward, Cairncastle where are the mountains mentioned here located? Northern Ireland is there a wall of the same name? Yes, The Mourne Wall crosses fifteen of the summits and was built to enclose the catchment basin of the Silent Valley and Ben Crom reservoirs. what plants are found along the mountain? The most common plants found in the Mournes are heathers and gorse. Other plants which grow in the area are: common cottongrass, roseroot, harebell what language is spoken in the country mentioned previously? : English is spoken as a first language by almost all of the Northern Ireland population. Irish and Ulster Scots  are recognised as "part of the cultural wealth of Northern Ireland" who is the author of the books that the tv show is based on? George R. R. Martin prior to becoming a writer, what did he do? Martin was an English and journalism instructor
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George R. R. Martin [SEP] Politics
Growing up, Martin avoided the draft to the Vietnam War by being a conscientious objector and did two years of alternative service. He generally opposes war and thought the Vietnam War was a "terrible mistake for America". He has also written against the glory of war and tries to realistically describe war in his books. While he did not endorse Barack Obama in 2008, Martin endorsed him for re-election in 2012 calling Obama the most intelligent president since Jimmy Carter. In 2014, Martin endorsed Democratic Senator Tom Udall of New Mexico. In the midst of pressure to pull the 2014 feature film "The Interview" from theatres, the Jean Cocteau Theatre in Santa Fe, New Mexico, which has been owned by Martin since 2013, decided to show the film.