I think it is besides the point that they were pampered upper middle class kids. The things they saw were horrible. In the danish edition, they went to India where there was a whole town build up around a mountain of trash. The folks there would drink black water from the mountain.
You don't often hear that from left wing people.
You do hear it a lot from right wing UK politicians.
(Yes, there are similar or mirror caricatures built by right wing people about left wing people. However, even as a right wing person, I might admit that not everyone in the left wing is Pol Pot).
For instance, I consider myself right-wing by local standards, but when looking at how things go in Turkey, if I must choose a party to support, I would pick the one that's a member of Socialist International. Still, I think that does not make right-left split totally silly.