Redundancy. (Voi) mă urmăriți (pe mine). Both voi and pe mine can be inferred.
Note that there are cases where it can be ambiguous without context. Like te urmăresc. It could be either:
(Eu) te urmăresc (pe tine).
(Ei) te urmăresc (pe tine).
(Ele) te urmăresc (pe tine).
I'm sort of wondering why this whole section sounds like an ode to the securitate! I spy on my niece, she accuses them, you are following me... There's more to Romanian culture than cold war era distrust.