"There were some shouting matches and scuffles outside the event between around 30 Black Lives Matter demonstrators and some Trump supporters waiting to enter. A Reuters reporter saw no sign any Trump supporters were prevented from entering the arena or overflow area." - Jeff Mason, Makini Brice Reuters Politics Page June 20, 2020 updated today 7:16 am
"A Reuters reporter said police did temporarily close the access gates after protesters arrived at the rally perimeter, but state troopers helped clear the area and the gates were open some three hours before the rally began." - Elizabeth Culliford Reuters Politics page June 21, 2020
I certainly am not trying to deny your claim Anony Mous that a gate was closed and that some Black Lives Matters antagonists may have been acting like complete a$$holes and disrupting Trump supporters right to peaceful assembly. My contention is that the Trump campaign claims that their supporters were prevented from entering the arena. Reporters of all stripes seem to call into question that claim.