“apushata: Your answer is similar to those who say if you don’t think women should not dress pritzusdikly, then don’t look.”
Actually its not. You believe videos are wrong, dont watch them, period. Say kinnos. Learn megillas eicha. Go to the beis hakvaros. Mourn the shechina in galus. Others sitting and watching a video have zero bearing on you and how you spend your day.
The only way the 2 situations are analogous is if someone followed you around all day with a portable video player strapped to his chest playing a video. Is THIS the problem?