Is it all because of mobile phones?

In 1991, a taxi driver, Rodney King III was severely beaten up with batons by 4 Los Angeles Police officers. In 1992, all 4 officers were found not guilty of charges of using excessive force, which resulted in riots in Los Angeles for days, 55 people were killed in the riots, 2000 were injured. Eventually 2 officers were found guilty of violating civil rights and 2 were acquitted. Even that would not have happened if the beating had not been recorded on video by an onlooker from a balcony. Today everyone has cell phones with built in cameras so police brutality is being revealed regularly. In Baton Rouge a shopkeeper who filmed the killing of his friend, Alton Sterling, hid his phone from the police because he thought they would destroy evidence. He was questioned for hours by the police, first in a police car and then at the police station till 3AM. Why? Were they trying to frighten him into changing his story? In another killing the girl friend of Phillando Castile started broadcasting live on Facebook immediately after the shooting. She was handcuffed, separated from her daughter and not given food or water. We in India have not forgotten the near torture of Krittika Biswas, a teenager, by New York Police, without bothering for any proof, the vicious assault on a grandfather, out for a stroll, or the sexual assault on Devyani Khobragade, who was set up by a racist woman at the US Embassy in New Delhi. Police are human and liable to make mistakes, like anybody else, but their inhuman treatment of witnesses and their total immunity from any punishment make people angry. This anger exploded in Dallas yesterday when an army veteran shot dead 5 police officers, 7 others were wounded. The shooter was later killed by a robot controlled bomb. Sounds like official terrorism, does it not? The deadly attack on police was rightly condemned by politicians, including Obama. We do not know if this is the beginning of a racial war but more such killings are bound to happen as the US is awash with guns. The National Rifle Association actually has the audacity to rate politicians on their support for guns, like credit rating agencies rate businesses. Bernie Sanders has a D- rating. The NRA recommends that," The only way to stop a bad guy with a gun is with a good guy with a gun." So, why did the good guys with guns die in Dallas? A black professor writes of the fear, anger and hopelessness of blacks while a white former Congressman threatens blacks with vengeance," This is now war. Watch out Obama. Watch out black lives matter punks. Real America is coming after you." So which America is real? A white policeman with a gun or a black person with a mobile phone? The result can only be tears.