No, the picture is of the void created by the bullet.
I thought because I was good at sports, I could become a sniper. I tried it out a little, but it turns out that I will never be a great sniper. Anyway, it is not uncommon to see the void created by a bullet, but it is unheard of to see the bullet. With the higher power sniper rifles, the void is often seen. I have seen it before.
Moving on, you claim to know the bullet passed behind him. There were two volleys of bullets fired. I do not know how many bullets in each volley, but by definition it was more than one. That meant multiple bullets passing around trump. They hit other people, and the ground. They kicked up debris. The only way to know for sure what hit trump's ear is a forensic inspection of it. Even then, it would be hard to pinpoint which bullet.