The Rosa Parks of Canadian supermarket parking lots. Justin Simard, an opera singer in Stratford, P.E.I., was bewildered by a sign near a Sobeys entrance that said premium spots were reserved for “Expecting Mothers” and “Mothers With Small Children.” So he complained about it on social media, and got a swift response promising changes. Simard said he was inspired to raise a ruckus after he got a dirty look from a mom for parking there—until he pulled his son out of the vehicle.