You are conflating issues. As a foregone conclusion the U.S. bombing the sovereign citizens of Iran is acceptable to you, only afterwards are you and other's justifying this by cherry picking recent events. If Iran hadn't just killed protesters, it'd be because they were working on nukes, or because they've launched missiles across borders.

You blind yourself to the dozens of countries around the world doing these things and worse every day while picking and choosing enemies that are acceptable for the United States to attack like al la carte menu items. Justifying those attacks is an after thought.