  Recently Mansuripur has called into question the validity of the Lorentz
force in connection with relativistic electromagnetic theory. Here we present
some very simple point-charge systems treated through order v^{2}/c^{2} in
order to clarify some aspects of relativistic controversies both old and new.
In connection with the examples, we confirm the validity of the relativistic
conservation laws. The relativistic examples make clear that external forces
may produce a vanishing torque in one inertial frame and yet produce a non-zero
torque in another inertial frame, and that the conservation of angular momentum
will hold in both frames. We also discuss a relativistic point-charge model for
a magnetic moment and comment on the interaction of a point charge and a
magnetic moment. Mansuripur's claims of incompatibiltiy between the Lorentz
force and relativity are seen to be invalid.
