The right to recline

In recent years, there have been countless incidents on airplanes in which passengers get into fights about space: Who gets the armrest? Is it ok to recline? This article talks about ways to prevent such arguments:

“How to Resolve Fights over Reclining Airplane Seats: Use Behavioral Economics” (Evonomics, May 12)

Reading this reminded me of a bus ride I was on in Cambodia. Across the aisle, I saw a man reclined in his seat, sleeping peacefully, while the mother and child behind him looked less than comfortable.

What do you think? Should the man have checked first before he reclined fully? Or is it the responsiblity of the bus manufacturer to design better buses, trains and plances, to make sure kids-on-laps aren’t squished?