The restriction was apparently meant to rule out any chance of a protest at the venue.
Policemen were seen checking people for any piece of black cloth and anyone wearing a black shirt was not allowed in.
The meeting was attended by a large number of beneficiaries of schemes run by the Centre and the state government.
A Gujjar group recently threatened to protest in Jaipur during the prime minister's visit, but had later called off the agitation.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)