To be fair, the United States by virtue of having a massive standing army and an entire terrorist organization puppeteered by it (namely NATO) and pushing smaller countries around is essentially interfering in the lives of their citizens. Retaliatory violence is always justified and thus, it would be justified for Iran/Russia/Ukraine/Serbia/any country we're bullying to try and get a president elected who will not absolutely destroy them.

Not that I like this scenario, but you have to consider all perspectives.