If Oswald killed Tippit, it was on orders from his CIA handlers. Oswald was a totally controlled CIA asset.
If he did not kill Tippit, it was the CIA that killed Tippit, after which they gave the gun to Oswald and told him to wait for them in the Dallas theater.
President Ford’s “Commission on CIA Activities in the United States” reported, “Police cover in the form of badges and other identification has, on several occasions, been obtained from local police departments.”
The CIA had no problem working with the Dallas Police to go after Oswald and arrange for his murder at the hands of Jack Ruby two days later.
Killing President Kennedy was part of the CIA’s quest to control the government, and I have it all documented. Click the link.
https://www.amazon.com/dp/B07V9JT65Y