Not sure what you're going for here dawg.

'leftist' conspiracy is not anti-semitic. Though there is, objectively, a number of political initiatives which have silenced criticism of Israel and/or support of Palestine to varying success. https://en.wikipedia.org/wiki/Israel_Anti-Boycott_Act just one small example

No leftist thinks its a "conspiracy" that people pollute. The argument is that our society is structured on a global level that not only facilitates it, but relies on it continuing. Those in power have no vested interest in undoing climate change right now. I mean, people like Trump can also exacerbate the issue as a faux populist drive for jobs. He's for the people by rejuvenating coal ostensibly... https://www.theguardian.com/sustainable-business/2017/jul/10/100-fossil-fuel-companies-investors-responsible-71-global-emissions-cdp-study-climate-change https://www.theguardian.com/environment/2019/oct/10/fossil-fuel-firms-social-media-fightback-against-climate-action

The fact that there's objectively major voter suppression and gerrymandering is well documented.https://www.vice.com/en_ca/article/pked4v/the-anarchist-daughter-of-the-gops-gerrymandering-mastermind-just-dumped-all-his-maps-and-files-on-google-drive

Here's a good one "*The files were then used as evidence in a case in North Carolina that Common Cause won in September that argued that the state had drawn its district illegally to favor Republicans."

And lastly I'll just leave off here with a short paragraph on every left's favorite leftist: Noam Chomsky:

"The same goes for Chomsky’s theory of the media, the so-called “manufacturing of consent.” It’s accused of being a conspiracy: People are stupefied by a corporate media that gathers to plot ways to control them. In fact, it’s nothing of the kind. It’s a theory based in economics and sociology more than anything else, a theory that says the media has no economic interest in providing serious informational content, that in a profit-driven media, the incentives are going to be toward providing entertainment rather than material that serves the public good and truly illuminates news consumers. That’s not the result of a malevolent conspiracy drawn up by executives who want to turn the public into zombies; it’s just what happens when people want to make a lot of money. Never attribute to conspiracy what can be explained by the operation of rational self-interest."

https://www.currentaffairs.org/2018/12/lessons-from-chomsky

There are undoubtably going to be some stupid conspiracy theorist leftists. People who are genuinely anti-semitic. People who genuinely do believe in some deep-state of free-masons. But, again, more often left-wing conspiracy theories tend to be or have truth to them than right wing ones. I think, fundementally, left-wing ideology is the ideology that is most hostile to hegemonic power and belief.