Former president. If he were president when people tried to kill him, he wouldn't be eligible to run again.
Also, it was disgruntled right-wingers who tried to kill him, so it's more likely it was his own hateful rhetoric and his own actions (like pedophilia) that motivated the would be assassins.
When Trump is being a bully (which he does often) you say "grow a thicker skin, you fragile flower!"
When people criticize Trump you say "you are being hatful bullies!"
It is just ridiculous that you guys can dish it out but can't take it. Grow up.