“Just as we used to protect you from the occupation by acting as human shields, we have come to protect you from yourselves,” one protester shouted at gunmen, referring to instances when Palestinian civilians positioned themselves between militants and Israeli forces.
The "gunmen" shot at these proud human shields, and 8 of the protesters were injured.
They forgot the cardinal rule: human shields only work when defending against people who value human life. Otherwise you are just a flesh shield.
UPDATE: Wafa (Arabic) reports that 15 people were injured during the rally, from Hamas members who shot at them - from a watchtower.