How to Start Mozilla Thunderbird in Safe Mode to Uninstall Broken Extensions

Everything worked according to plan. More and more smoke came up, though, and things got tight. The heat was unbearable in some spots but not sufficient in others. What had gone wrong?
I think I overcrowded the pan. The steam, alas, gently stewed the filet mignon, which should have been browned.
I think I may also have overcrowded my Mozilla Thunderbird extension list — and there's the add-on that keeps crashing the entire application when I so much as launch it...
›› Mozilla Thunderbird does not start? Possibly, it's a faulty extension. Here's how you can launch Mozilla Thunderbird in a special "safe" mode that disables all extension so you can get rid of the problematic ones.