It could be argued that the interim revolutionary government in Russia in 1917 claimed to be democratic, but it did not have popular support because "<span>it was a compromise government made up of many parties with many views, pleasing everyone a little, but satisfying no one," since it's main objective was to "please the masses". </span>
The most obvious difference is in the two groups' names. The YAF appears to show much nationalism, while the SDS suggests to us that it is Democratic. The similarity about these two groups are that they both are run by young people, as their names start with "Student" and "Young."