The day of the shooting, Purinton verbally harassed the men, who had come to the USA as students and worked at nearby Global Positioning System maker Garmin.
Today also happens to be my 34th birthday and while I am missing my most precious thing in life - my Srinu - in a way, I see this as a sign from him helping me to gain closure with the legal process surrounding his murder and seeing this man brought to justice.
"My Srinu had never hurt anyone and only had love and respect for others, but he had to lose his life because of your hate".
Although Purinton could have received the death penalty under federal rules, the widow of the man killed, Sunayana Dumala, said in a written statement to the court that her family did not want that.
"If you could have kept your anger inside and spoke to my husband softly, Srinu would have been more than happy to share his background and help you understand that not every brown skinned person is suspicious or evil, but kind, smart and contributing to America", she said in Tuesday's statement. Instead you chose to rage and bully in anger and when you were stopped, you made a decision to take their lives, ' the statement continued.
As Purinton fled, Ian Grillot, one of the patrons who had intervened earlier, ran after him.
Purinton previously pleaded guilty in state court to charges of murder and attempted murder and was sentenced to life in state prison.
Purinton admitted that he shot Kuchibhotla and Madasani, attempting to kill both men, due to their race, colour, religion, and national origin.
'As a result, a promising young life has been tragically cut short, and other lives have been filled with suffering.
Sessions said in the statement that while the "irreparable harm" that Purinton has done can not be undone, "some measure of justice for the victims' families has been achieved". Concerns grew in the community about misplaced perceptions among individuals over immigration status and ethnicity of Indians and South Asians in America.
After the shooting, Purinton drove 70 miles to Clinton, Missouri, where he confessed the shooting to a bartender at a restaurant.
Purinton did not comment in court on Tuesday.
Purinton, a Navy veteran, was a regular customer at Austin's.
Grillot and Madasani survived, but Kuchibhotla died.
Purinton poked Kuchibhotla in the chest, called him a "terrorist" and an epithet disparaging persons of Middle Eastern descent, and shouted, "Get out of my country!". Grillot, who hid under a table during the shooting, confronted the gunman once he thought Purinton had run out of ammunition.