barricader
/bəˈrɪkædər/Definitions
1. noun
a person who erects or maintains a barricade, especially during a riot or protest
“The police had to deal with a barricader who was causing trouble during the demonstration.”
2. verb
to create or maintain a barricade, especially during a riot or protest
“The protesters barricaded the street, causing traffic to come to a standstill.”