Supporting evidence of what? Claims made without evidence can be dismissed without evidence. The idea that the various TV specials somehow “support” the conclusion that Oswald did it and acted alone is absurd. At best they supported the notion that it could have happened that way.
Oswald's movements and actions--after the assassination shots were fired from the TSBD--are evidence.
Explain why this piece of evidence is not, in your opinion, evidence:
-- Lee Harvey Oswald attempted to shoot officer Nick McDonald with his (Oswald's) revolver when about to be arrested.