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>> “So you’ll run and save your own ass above all” <<
Your IQ appears to be falling fast.
Unlike you, I will always do whatever I can do without making the situation worse. Killing or injuring innocent bystanders sounds like your MOS.
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By all means, run for it. When people fight back against mass murderers, things can get dangerous - and it's their fault, not the mass murderer's. If only they would wait for official instructions, all would be well, but no, they have to go asking what Jesus would do - without the approved certification of decisionmaking authority from an accredited church. So, as the danger of self-defense is clearly not in your personal best interest, it's definitely best if you leave (as soon as you get a good selfie to tweet to show you were there).