Is accelarated depopulation a reality?

Something as mentioned here. My roommate has been telling me about this stuff lately, she’s been watching all this stuff on YouTube about how about some orders would plan to become one, and eliminate a hell of a lot of people into a manageable number. (apparently, some of these plans date from quite a while back and have been in action for a number of years)

While it sounds all crazy to me, and I usually laugh at conspiracies, I most certainly don’t doubt the heinous intent that people would carry out if they could. (and that has been shown in man’s history more than enough) I’ve been reading stuff about Zionism, The Codex Alimentarius, which the latter is some kind of documents that decide what goes in our food, what medical stuff we’re allowed to have and all. Zionism, I really don’t get at all what it is. Apparently, the big plan is to slowly decimate the world’s population through malnutrition, starvation, disease and man made natural disasters, and then control the rest somehow.

This sounds kind of silly, but it’s also freaky. Now please cut me a bit of slack for posting something so weird, but in all that I’m reading and what my roommate told me and the few videos I saw, I have a hard time understanding everything. But I do get the big picture it seems to center itself around.
Then again, if this is real, why would it be so open everywhere? Wouldn’t the guys making speeches and all get shot or jailed? How do they know all this? Is this just some crazy conspiracy, or is there some truth to it? Thoughts? Please enlighten me. Is something like this possible? Or is it as crazy as things like the 2012 predictions? The way that societies, governments and politics work, is this feasible, or not at all?
Personally, it all sounds like some crazy sifi movie to me, but I can’t help but to find kind of alarming.