Left turn during takeoff run
 

I've heard/read the reasoning for building right thrust into model RC planes as means to combat P-factor as long as I've been building and flying RC planes, but never really dug deeper to fully understand it.
Today I happened upon this YouTube video that visually explains this and other significant factors that create left yaw. From 17:40 to 21:00 is relevant. Enjoy.

Very nice, thank you for sharing!