If you have found this Pokemon before check your pokeDex and look for its area. When you want to catch it, put a high lvl wobbuffet first on your team. When Latios/Latias appears, it won't be able to flee because of wobbuffet's shadow tag.
Just wait until it struggles then inflict hits on it. When it has low hp, catch it. More.
An alternative live trapping method is the use large cage traps.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.