  High resolution polar Kerr effect (PKE) measurements were performed on
La1.875Ba0.125Cuo4 single crystals revealing that a finite Kerr signal is
measured below an onset temperature-T_K that coincides with charge ordering
transition temperature T_{CO}. We further show that the sign of the Kerr signal
cannot be trained with magnetic field, is found to be the same of opposite
sides of the same crystal, and is odd with respect to strain in the diagonal
direction of the unit cell. These observations are consistent with a chiral
"gyrotropic" order above T_c for La1.875Ba0.125Cuo4; similarities to other
cuprates suggest that it is a universal property in the pseudogap regime.
