As a progressive, my attitude is that there are a LOT of legitimate concerns about the integrity of US elections, and Russians leaking embarrassing DNC emails is the very least of them. Let it go. The US has done massive disinformation and worse to attempt to influence Russian elections, so we can hardly expect the Russians not to make the attempt (with or without Trump’s collusion). It is worth asking why he won, but I’m pretty sure the Russians are the least of it. If you are concerned about the honesty of US elections — take it on directly. Look at voter suppression and intimidation, the potential for hacking the system and ways to detect and stop that, and all the ways we discourage a strong voter turnout. Don’t waste time, effort, or money on this silliness.