The old runaway streetcar question, with a twist.

So the streetcar is out of control and running downhill towards 5 people on line A. You have the power to flip a switch and steer the streetcar onto line B, towards 1 person. Do you flip the switch?

The twist. 1 of the people on line A is an admitted murderer and gained freedom through a technicality. Another person on line A bullied you in highschool. You don't know the remaining 3 people on line A nor the person on Line B.

Do you flip the switch.