Rider Attempts to run me off Track During Sierra Nevada Moto Championship Race

In this video I was racing in the Supermini main race with my Alta Redshift (Becasue Light Bee has a flat) and on the final lap the rider behind tried to make a pass and bumps me on the inside and attempts to repeatedly push me off the track all the while opening the door for the racer behind to pass inside. I don't condone this kind of passing especially in a mini moto race where children race.