To run roughshod over something means to act without regard for it, so in this context the feds are not going to act without regard for the wellbeing of the speaker and the others.
Consider the statement "It may be the feds are just a little nervous about your media popularity so they have decided not to act without regard for our wellbeing.". Is the statement "It may be the feds are just a little nervous about your media popularity so they have decided not to run roughshod over us." false? Yes/no/unknown