To translate from the Khomeinist: "global injustice" is the situation that prevails when Iran's power-crazed Twelvers do not yet control the globe. Now that they are pretty much the hegemon of the Middle East, their lust for power has grown exponentially, hence the need to couch it in fluffy "social justice" terminology so as to not set off alarm bells among the infidels.
Update: FYI, one of the speakers, Kevin Barrett, has been called "an anti-Semitic conspiracy theorist and frequent Press TV contributor." He is also the editor of a "new anti-Semitic and conspiratorial book, We Are Not Charlie Hebdo! Free Thinkers Question the French 9/11." Most of the book's essays assert
that the shootings at the Charlie Hebdo headquarters and at a kosher market in Paris were a “false flag operation” perpetrated by any number of culprits including the Israeli government, the United States government, and/or the French government.No doubt he and voluble local Khomeinist Zafar B. will have much to chat about.