Healy v. James (FindLaw)
Denial of official recognition, without justification, to college organizations burdens or abridges freedoms of speech, assembly, and petition.
NAACP v. Button (FindLaw)
Under the conditions of modern government, litigation may well be the sole practicable avenue open to a minority to petition for redress of grievances.
Freedom to petition resources
The Petition Site
This site is frequently used by organizations to collect comments during official public comment periods.
PetitionOnline.com
PetitionOnline.com provides free online hosting of public petitions for responsible public advocacy.