Change.org should add a button on why you don’t support a petition. There are a lot of petitions that are started simply off emotion with no knowledge of the subject. Some are good and some are bad. But either way, everyone should be allowed to express how they feel regardless if they support or do not support a petition. 

Most petitions and or surveys only reflect one side or have preset questions but don’t truly reflect on how people really feel. So, change.org, allow each individual the freedom to actually choose, add a button that gives people the option to not support a petition.