so, now it is the American citizens' fault, and we shouldn't care?
Who said now? If you were influenced by someone trolling Facebook and posting memes, then it was always your fault. And, again, you can care all you want. You have free will to be dumb, but the best way to combat a troll is to not feed the troll.
You're doing the opposite. Because of you and others like you, especially the liberal media and Democrats in congress, Putin has succeeded beyond his wildest dreams. It's simple logic that if it worked so well the first time, triggering a political investigation into the duly elected US president and in the process convincing half of the country that the duly elected US president is also a Russian spy, then of course he's going to keep doing it.
Although, if you do care so much, then why aren't you calling for a second special counsel to investigate this newly uncovered foreign 'influence' campaign that was aimed at helping the Democrats? Why aren't you also accusing Democrats of colluding and being treasonous traitors with zero evidence? If you truly cared, then why is your outrage partisan?