A little more context on the clip: These cause the cars to slow down after which they proceed to mug/rob the driver or simply cause some harm to them.

In Nepal's context, what happens is not very apparent; Bandhs are primarily done for political reason. But there are plenty who use it for their own monetary gains. Also, too many bandhs and forced bandhs that cripple the economy and daily lives of civilians are no better than what you see in the clip above.

I wouldn't suggest taking drastic action like above, but it might be time we voice our distaste against these frequent bandhs.