  We investigate spin transport in two dimensional ferromagnetic (FTI) and
antiferromagnetic (AFTI) topological insulators. In presence of an in plane
magnetization AFTI supports zero energy modes, which enables topologically
protected edge conduction at low energy. We address the nature of
current-driven spin torque in these structures and study the impact of
spin-independent disorder. Interestingly, upon strong disorder the spin torque
develops an antidamping component (i.e. {\em even} upon magnetization reversal)
along the edges, which could enable current-driven manipulation of the
antiferromagnetic order parameter. This antidamping torque decreases when
increasing the system size and when the system enters the trivial insulator
regime.
