Police say a former student drew detailed maps of a primary school in Tennessee - before killing three children and three adults.
Audrey Hale - who was transgender - was armed with assault weapons and blasted through doors in Nashville, before being shot dead by officers.
US President Joe Biden says it's time to ban the type of guns used in yesterday's attack.
I call on Congress again to pass my assault weapons ban.
It's about time we make some more progress. pic.twitter.com/ZE584cUN6R
— President Biden (@POTUS) March 27, 2023
Nashville resident Chad Baker is worried about a backlash.
"Unfortunately it's going to have a ripple effect through the trans community and that's very sad".
"It's hard enough and dangerous enough normally for anyone who's in that community and unfortunately it's just going to be worse".