The lawyers for the family of a black man shot in the back by police in the US state of Wisconsin say he will need a "miracle" to walk again. Jacob Blake, 29, was shot "at least seven" times as he went to a car and opened its door in Kenosha. At least one of the bullets went through his spinal cord, lawyers said. The shooting of Mr Blake sparked protests, violent at times. The governor of Wisconsin is sending more National Guard troops to Kenosha. Mr Blake's mother, Julia Jackson, called for "healing", saying her son would disapprove of the violence seen during the protests. As a result of the partial or complete severing of his spinal cord, Mr Blake is paralysed, with doctors unsure if he will recover the use of his legs. "His family believe in miracles, but the medical diagnosis right now is that he is paralysed and, because those bullets severed his spinal cord and shattered some of his vertebrae, it is going to take a miracle for Jacob Blake Jr to ever walk again," lawyer Ben Crump told a press conference on Tuesday. The 29-year-old, shot as his young sons screamed in the car, was also left with holes in his stomach, an arm injury and damage to his kidney and liver. Most of his colon and small intestine had to be removed, his lawyers told reporters. Ms Jackson told the press conference that her son had been "fighting for his life", but said if he "knew what was going on as far as that goes, the violence and the destruction, he would be very unpleased". Pictures from the city of about 100,000 on the south-western shore of Lake Michigan show buildings and cars damaged following two nights of protests against police violence. On Tuesday, Wisconsin Governor Tony Evers said he would send more National Guard troops to Kenosha to protect state buildings and support first responders and firefighters. Mr Blake's shooting comes as the US grapples with the treatment of African-Americans at the hands of law enforcement, as well as wider questions about racism in society, since the death in police custody in Minneapolis of another black man, George Floyd, in May. In her emotional speech, Ms Jackson addressed racism directly, reminding those listening that "no one is superior to the other". "We need healing," Ms Jackson told reporters. "As I pray for my son's healing - physically, emotionally and spiritually - I also have been praying even before this for the healing of our country... We are the United States. Have we been united? "Do you understand what is going to happen when we fall - because a house that is against each other cannot stand."