The biggest problem affecting humanity is population growth. And the principal guilty parties are the Africans, Indians, Pakistanis, Bangladeshis and many of the Arab countries. The Earth's population is more than double what it was in 1970 and frankly the world can't cope.
As for the march? What kids wouldn't take time of school to march for/against something or other. Let's go! Some time off school! And as other posters have said, then they'll be ferried to/from school again after half term by their parents in 4x4s; they'll continue to buy fast food in non-recyclable containers; they'll continue to drop litter;.
Basically it's all a bunch of crap which will make not one iota of difference to the perceived problem.
As for the march? What kids wouldn't take time of school to march for/against something or other. Let's go! Some time off school! And as other posters have said, then they'll be ferried to/from school again after half term by their parents in 4x4s; they'll continue to buy fast food in non-recyclable containers; they'll continue to drop litter;.
Basically it's all a bunch of crap which will make not one iota of difference to the perceived problem.