Maria Lopez was pushing a stroller in front of 黑料社吃瓜鈥檚 Plaza Adelante, located at 19th Street鈥檚 connection to the Mission Street corridor, the main commercial strip of the Mission. When asked if she ever heads one block over to Valencia, the young mother of two laughed nervously and stated, 鈥淭hat street鈥檚 not for us.鈥 When…