Washington (AFP) – The looming execution of a US mother-of-14 — sentenced to death in a controversial case for the murder of her toddler daughter — has provoked backlash from celebrities like Kim Kardashian and a growing movement that reaches well beyond US borders. Melissa Lucio is to be put to death on April 27 for the 2007 murder of her two-year-old daughter Mariah, whose body was found at the family home covered in bruises, days after falling down stairs. Pregnant with twins at the time, Lucio’s life had been marred by both physical and sexual assault, drug addiction and financial insec…