How do you say that the motion of electrons is affected by the magnetic field?

Explanation

1) Take a bar magnet and bring it near the TV screen (while TV is running).
2) We can observe that the picture on the screen is distorted.
3) Move the bar magnet away from the screen.
4) Now we will get a clear picture,
5) So,we confirm that the motion of electrons is affected by the magnetic field.