How can an American "abuse" their freedom to travel?
Since you probably haven't read much of the thread, I'll summarize for you...
- camping with thousands of his friends in an park area not intended for that use, depositing massive amounts of fecal matter
- defying the legal authority of national park rangers (federal officers), refusing to follow the same legitimate rules that apply to the rest of America
- committing assault and battery on rangers when displeased with legitimate directives
- placing an undue strain on the budgets of the park and the local towns and counties for increased services, such as emergency response, all arising from the above