Hundreds attend mentally disabled girl's tenth birthday after Facebook appeal when none of her class Mackenzie Moretter, of Shakopee, Minnesota, celebrated her tenth birthday on Saturday When none of her classmates could come to her party, Mackenzie's mother posted on Facebook groups, inviting strangers to the celebrations More than 700 people joined a Facebook event for the birthday party Hundreds of people flocked to a park in Shakopee on Saturday They brought Mackenzie gifts and food and she made new friends Mackenzie was diagnosed with Sotos Syndrome when she was a year old The disorder delayed her development and makes...