More effective would be to track a few key politicians, such as those on the committees that would deal with regulating these things, and also a few reporters who have agreed beforehand to participate.
Then the tracking on the politicians is turned over to the politicians, but NOT made public. The reporters write stories about this, illustrating the tracking detail by publishing what it showed about them.
This approach gets the news out to the public, personally shows the key politicians the scope of the issue (and that they are vulnerable too), and lets the public know that the politicians have seen proof of how serious the issue is so that the politicians know that they need to get to work on this because their opponents come the next election will certainly be gearing up to use it as an issue if they do not.
My idea is based on the fact that in my experience people rarely really care about privacy until it personally affects them.
When Snowden revealed the extent of NSA activities, it caused a momentary uproar but the people moved on pretty quickly after that. As far as I know (and let me know if I am wrong!!), there was no fallout for the government, and business continues as before.
So I am not sure if people will care this time either.
It provided security people with ammunition to push things like encryption of data over "private" network connections, which prevented their misuse by governments (or at least made it harder)
It also pushed tech. companies to publicly take positions on government spying, in general by insisting they wouldn't co-operate.
Few have the stomach for that sort of thing...
1) Be an investigative Journalist
2) Purchase access to these location vendors data
3) Correlate data with known mobile numbers of politicians
4) Find things in data that might be of interest to readers (e.g. "politician x was noted to be in the same place as Lobbyist y on 5 different occasions")
5) Publish Story :)
still need an outlet for the story though