Testimony changes
Availability of material pieces of evidence
Character impugning information which paints the innocent martin as anything but
How was Martin anything but innocent? Was there a warrant out for his arrest? What his character may/may not have been like is irrelevant. Zimmerman had no business stopping him.
Again, show me evidence this conspiracy BS is anything other than some money grabbing right wing propaganda. Links and such. As of yet, it's a bunch of nonsense from a known conspiracy theorist.