Park ranger
A park ranger, park warden, or forest ranger is a person entrusted with protecting and preserving parklands – national, state, provincial, or local parks. "Parks" may be broadly defined by some systems in this context, and include protected culturally or historically important built environments, and is not limited to the natural environment. Different countries use different names for the position. "Warden" is the favored term in Canada, Ireland, and the United Kingdom. Within the United States, the National Park Service refers to the position as a park ranger. The U.S. Forest Service refers to the position as a forest ranger. Other countries use the term "park warden" or "game warden" to describe this occupation. The profession includes a number of disciplines and specializations, and park rangers are often required to be proficient in more than one.
Parkour
Parkour is not widely practiced in dedicated public facilities. Although efforts are being made to create places for it, many traceurs do not like the idea, as it is contradictory to parkour's values of adaptation, creativity, and freedom. Traceurs practice parkour in both rural and urban areas such as gyms, parks, playgrounds, offices, and abandoned structures. Concerns have been raised regarding trespassing, damage of property, and use of inappropriate places such as cemeteries. Many parkour organizations around the globe support the "Leave No Trace" initiative, an urban version of the outdoor conservation ethic created by the Seattle nonprofit "Parkour Visions" in 2008, promoting safety, respect for the spaces used and their other users, and sometimes includes picking up rubbish to leave areas in better condition than they were found.