Tystas Ner
Silenced
Lenvy 
The song as a whole is a reaction to the increasing popularity of the Sweden Democrats, a Swedish far-right political party known for their anti-immigration views and conservative views regarding Swedish national identity. Widely considered to be a racist, xenophobic party, to the point where all other mainstream political parties have refused to work with them, they have grown to be a noteworthy force in modern Swedish politics. The frontman of the party is Jimmie Åkesson, whom rapper Sebbe Staxx threatened over Twitter to kill a few years ago. He was fined for making illegal threats. This song came out a short time after and is in some ways his way of showing that he hasn't given up yet.
Olof Palme was prime minister of Sweden from 1969-1972, and again from 1982 until he was shot to death in 1986 by an unknown assailant.
Per Albin Hansson was prime minister during World War 2. Sebbe is (as far as I can tell) of Norwegian heritage, and is holding Hansson responsible for striking a deal with Nazi Germany while Denmark and Norway resisted. It might be worth mentioning that all of the performers except Promoe (as far as I know) are of non-Swedish heritage, although some would not consider Norway to be foreign enough to count.
Fredrik Virtanen is an entertainment journalist. This is a bit of a rabbit hole, but Sebbe is calling Virtanen out for calling Promoe out for calling out Carl Bildt (a former prime minister).
South Stockholm is, at least in stereotype, known as a strongly left-wing, working class area. The "red line" being referred to is the red subway line that runs through his neighborhood.
Promoe mentions "lasermen", which is a reference to an infamous Swedish attempted serial killer (ten attacked, one death) referred to as the "Laserman" who was active in the early 90s, so called because he used a rifle with a laser scope to attack immigrants. The smell of gas is presumably a reference to the gas chambers of the Nazi concentration camps.
The current king of Sweden has been especially controversial as of late, after revelations concerning the details of his, elt's say, more "party animal" side. Drinking, drugs, strippers, fraternizing with organized crime, etc., all of which has been described by a number of controversial books and articles written by former acquantances, and one alleged lover.
I believe Safehouse, RMH, DVSG, and Ayla are all Swedish hip-hop record labels.
To be honest, I don't know what "Woria Firi" and "Choni barqerbam wagwan" mean. I've assumed that the first is a name and the second is a phrase in some language, but I haven't been able to work it.
The word "minority" in "neighboorhood minority" is actually a bit of a linguistic cheat. The original word is "blatte", which is a broad racial slur. It isn't specific to any one race, except insofar as it targets people who are visibly of foreign heritage.
In the context of the song, "brown" or "brown shirt" means Nazi, referring to the uniforms of Nazi Germany.
The Swedish 90s were marked by a number of marches and attacks by skinheads, Nazis, and other white supremacists.
Iblis is the Muslim name of the Devil.
Kent Ekeroth is a Sweden Democrat.
SP is short for Svenskarnas Parti (roughly translated, the Party of the Swedes), a small but vocal Nationalsocialist party.
Lastly, the bit marked as performed by Aleks is the chorus, which is naturally repeated throughout the song.
Tensta (as in Adam Tensta's stage name) is a suburb of Stockholm populated predominately by immigrants.
Adam's final line was hard to translate. He says he's proud to be Swedish, but ashamed to be a "svenne", which is a word that has no real equivalent in English as far as I know. In some ways, it's the opposite of "blatte": a racial slur aimed against "ethnic", white Swedes. In others, it refers to a kind of stereotypical, mainstream, narrow-mindedness. What he's saying is that, though he's proud of his family, origin, and upbringing, if the Sweden Democrats represent what it means to be truly Swedish, then he'd be ashamed to be a true Swede.

Komentarze 3
Thank you very much.
I was curious to know the meaning of these lyrics, I had kind of grasped that it was about failed integration and racism but I didn't expect it to be so violent at politicians.
Well, sort of. It's about the rise of right-wing political over the past couple of years. And yeah, it's kind of unusual for Swedish rappers to be this "violent". It's actually a kind of "take that" from the first guy, Sebbe Staxx. A few years ago, he said something on Twitter about wanting to beat Jimmie Åkesson (politician) to death, or something like that. He was fined for it, and this song is to an extent his way of showing that he's not been beaten. I'll add some more comments later on. Edit: comments added.
Oh wow, thank you so much for providing this much context, I really appreciate it.
Now it feels like I have a more in-depth understanding of this song all thanks to you. It must have taken you some time to write down all these little things the song refers to and that might not be understandable to people outside of Sweden.
So thanks a lot, like really, this is awesome ^^