Answer:
The Venezuelan immigrants were fearful to re-enter Brazil because of the violent protests by the Brazilians who were protesting against the attack of a local shop owner by four suspected Venezuelan immigrants.
Explanation:
The inflow of immigrants into Brazil has been an ongoing process for some years now. Venezuelans were trying to get away from the economic and political turmoil that their country is under.
The Venezuelans entering the Brazilian border were "fearful" because of the recent uproar over the attack of one local shop owner by suspected Venezuelan immigrants. This led to an uproar with the locals coming together in hoards and driving back any of the immigrants trying to cross the border, driving them back. This violent attack led to the immigrants fearful of their safety.