What effect on Putin? He’s still moving forward with his mission to take over Ukraine. His soldiers are still firing on Ukraine and destroying property and killing people.
I do think social media has helped get aid to the Ukrainian people, and maybe America cut of buying oil from Russia faster than it would have been without social media.
I think social media would not have affected much of what Hitler accomplished, because I think too many Germans were actually antisemitic at the time, and thought they were better than other people and so taking over other countries would be spreading a good life for more people. Also, politicians tried to ride on his coat tails, and we just saw in America how so many Republicans will sell their soul to align with Trump to ride his popularity, and that is with the social media we have today.
If Germany had not turned on Russia during WWII, who knows what would have happened.
In my opinion Hitler could have wooed Americans. He was pro capitalism, a bigot, a White Supremacist, and remember this was during segregation in the South. The South was full of mini Hitlers at the time. Hitler could have marketed himself as the way to get the confederacy back and they would have loved it. There would have been a percentage of the South that would have seen the danger, but a lot of Southerners would have been caught up in the idea, and also people in other parts of the Bible Belt and scattered throughout the country.
In the late 1930’s there was still some economic difficulty in the US and so promised of better jobs and economy would have helped woo Americans to Hitler also, as those promises always do.