The two tragedies bring America to a total of 251 mass shootings so far this year, according to Gun Violence Archive
Tyson was slammed for belittling the deaths in the name of providing data.
"I know you're trying to math people here, but this is tasteless and disrespectful. Lost all respect for you," wrote teafortat.
D. Earl Stephens said: "Thanks. I didn't think I could get any more depressed today. What a completely sick and ludicrous thought from somebody I am 100 per cent sure knows better".
Scientist Andrew Baggarly responded: "Making a didactic if factually accurate point does not always equate to intelligent or productive discourse. And this was neither intelligent nor productive. Disappointed to read this from you."
Filmmaker Adam Best pointed out: "Cars are more regulated than assault weapons in much of the country."
"What is the scientific term for "tone-deafness?" asked John Pavlovitz, author of the book Hope and Other Superpowers.
American sports journalist Rich Eisen was astounded: "Imagine going to the store or a bar and getting shot at or killed or having a loved one shot at or killed and a supposed genius tells 13 million people it's all just a spectacle because, really, statistically, it's not all that bad compared to other ways you could suddenly die".
Another user replied: "Neil, I used to think that you were as cool as the other side of the pillow. Now I just think you're COLD."
Celebrities including Rihanna, Lili Reinhart, Nick Jonas, and Reese Witherspoon expressed their sympathies for the victims and called for gun control reform.
Democrat Gabrielle Giffords, a victim of an assassination attempt near Tucson in 2011, said the Senate must return from August recess immediately to take action.
