CNN CHICAGO.- The flare-up in gun violence igniting the streets of Chicago caught a 3-year-old boy in the cross fire early Saturday morning, local police said. The child is in critical condition. The boy was with his mother and another man, in the city’s Brighton Park neighborhood, when the shooting occurred outside a home on South Sacramento Avenue, police told CNN Chicago affiliate WLS. The woman told investigators that three people — two women and a man — walked past them, and the man opened fire when they reached the end of the block. Medical personal rushed the toddler to Mt....