i am not justifying anything. i'm only saying that if both sides are using fucked up methods then why do we only see one side?
also if it come to who is right and who is wrong that'll take us to who started it all and the reasons behind everything which is going to answer your question,

lets take iraq for example: the us saw it growing better and started seeying it as a threat and so they started a local war inside the country, then they pushed their army in there and killed 1 million iraqi in 3 years, then iraq people got angry and responded with 9/11 attack, and for some reason they started making such things their main method.

even tho the methods that are used are fucked up but that doesn't make the us right nor deny the fact that they started it nor the fact that they use even worse methods. they litterally destroyed every building and killed millions while the other side killed thousands, its not even a close comparison.