I understand you want to help, but i would have some serious reservations about building a proof of concept crowdsourced surveillance analysis platform and demonstrating whether it's viable. There are an incredible array of surveillance tools involved in the fight against terrorism. I'm not sure encouraging the general public to actively participate in a domestic intelligence platform would have a net positive impact on society & our basic rights.
But given that there are no technical limitations for this being developed, it's safe to assume that it will be developed at some point, if it has not been already.
Wouldn't you prefer that something like this exists in the public domain?