Activists who blocked the entrances to stores on North Michigan Avenue on Black Friday to protest the fatal shooting of a black teenager by a white Chicago cop may have split opinions with their tactics.

But their goal of forcing retailers to suffer economic pain on what’s historically the busiest shopping day of the year was a success, according to unhappy store staff and managers who said Monday that Black Friday sales on the Magnificent Mile were 25 percent to 50 percent below projections.