Help needed in deciding about a major.

I really want to work for the human rights i.e. Women rights, Child labor, and refugee issues etc. I want to work with an international non-governmental organisation i.e. UWC International, Amnesty International, UN etc. I know that you need to major/minor in a foreign language, preferably, French to work in these organizations. I was wondering ehich major will be more suitable for this field: International Relations, Political Science or Development studies (I will do one foreign language anyway, also don’t want to do anything involving much economics) Kindly help!

Please help