If you put it that way, lot of people have been killed by Russia’s weapons in Ukraine. US’s weapons are used to protect civilians there. Think of all the Russia’s missiles shot down, or artillery depots blown up.

Contemporary weapons are also much more precise. That means lower collateral damages. A lot of development efforts are to further enhance on that front.

Weapon development is essential. Of course we should condemn mis- or excessive use of force, especially against civilians.