Yaaa that's right!  Next thing you know they'll be tossing tea into the Potamac or wearing hats from the American revolution.  

But you're right in this way,  You may get 80% of activist to a rally, but they may be less than 10% of the entire population.   It's hard to know how the general population may feel, if you only chose to only hear those in the street.    

Beware though, history is full of minorities inciting a much larger movement over time.   The signers of the Declaration did not represent a majority of American colonist     .https://www.reddit.com/r/AskHistorians/comments/2grkvc/what_percentage_of_american_colonists_were_in/