President Donald Trump said Tuesday that the United States would react strongly if authorities in Iran started hanging people in their crackdown on a popular uprising against the government.“We will take very strong action if they do such a thing,” he told CBS News in an interview, when asked about hangings potentially beginning on Wednesday.For all the latest headlines, follow our Google News channel online or via the app.“When they start killing thousands of people -- and now you’re telling me about hanging. We’ll see how that’s going to work out for them,” Trump said in a video clip released online.The interview took place as Trump was in the northern US state of Michigan to visit a manufacturing plant and deliver a speech on the economy.In his speech, Trump reiterated a message he had posted earlier on social media, that “help is on its way” for the Iranian protesters.He also said it was unclear what the death toll in Iran actually was.“I hear numbers -- look, one death is too much