: "Links, zwo, drei, vier" is a standard German military cadence used to keep marching soldiers in step. The use of "zwo" instead of "zwei" (two) is traditional in military contexts to avoid confusion with "drei" (three) over radio or in loud environments.
: The ants represent the collective power of the "common people" or the working class, a recurring theme in leftist imagery. Reference Links links_2_3_4
Links 2 3 4 Wiki - Detailed background on the song and video. : "Links, zwo, drei, vier" is a standard
Wikipedia: Links 2 3 4 - Overview of the song's production and political significance. links_2_3_4