Know Your Enemy is the sixth studio album by Welsh alternative rock band Manic Street Preachers, released on 19 March 2001 by Epic Records.

In 2022, the band released remixed and expanded 2- and 3-disc editions of Know Your Enemy, rearranging the tracks into the two separate albums as originally intended.

Drummer Sean Moore stated in an interview with a Spanish reporter in 2014 that the songs included on Know Your Enemy were originally intended for two separate albums: Door to the River, which consisted of more reflective and personal material, and the heavier, more politically charged Solidarity, with the intention of releasing both on the same day.

[2] The only remnant of the original two-album idea was that the first two singles, "So Why So Sad" and "Found That Soul" – reflecting the very different styles at play – were released on the same day as a publicity stunt.

[4] On the album's diverse sound, Pitchfork Media stated: "Know Your Enemy finds the Manics attempting to write a protest song in just about every genre.

"[5] They attributed the "riotous" punk sound of the tracks "Found That Soul", "Intravenous Agnostic", and "Dead Martyrs" to the influence of Sonic Youth and Joy Division and the jangle-pop of "The Year of Purification" and "Epicentre" to R.E.M..[5] The tracks "So Why So Sad" and "Miss Europa Disco Dancer" were described as "a Beach Boys homage" and "a disco parody" respectively,[4][5][6][7] while "My Guernica", "His Last Painting" and "The Convalescent" were described as "dark, marching and charging post-punk anthems".

You look back on all this stuff and think, “What a fucking idiot I was!” You can’t help but live in the moment, and basically with Know Your Enemy we tried to be too spontaneous and too organic.

[19] In 2021, Nicky Wire reflected on the album's reputation and sales: "To this day, you see Know Your Enemy at service stations for £2.99, because they bought so many thinking it was by one of those commercial bands!

[20] Stephen Thomas Erlewine of Allmusic said in two and a half stars review that "it was time to strike back with a harsh, political record" after the more "lush arena rock" of their previous albums Everything Must Go (1996) and This Is My Truth Tell Me Yours (1998) "The block-type cover art reveals that at a glance, and so does the ferocious opener, "Found That Soul," both suggesting their dark high watermark, The Holy Bible."

concluding that the length and inconsistent quality damaged "a record that rocks harder, sounds better, than anything since Richey James disappeared -- but lacks the sense of craft that made Everything Must Go a minor masterpiece.

"[26] Robert Christgau gave the album a two-star honorable mention, calling it "punk propaganda poppified" and citing "Ocean Spray" and "Let Robeson Sing" as highlights.

[21] Victoria Segal from the NME gave a positive review to the album and wrote: "Know Your Enemy sees them scrabbling for some of that early freedom, catapulting themselves back to a time when their minds could only just keep pace with their lipsticked mouths and they had all the establishment credentials of a red light district.

[20] A negative review came from Rolling Stone, which wrote: "Nowhere amidst all the confusion is there even a worthwhile tune to be salvaged", calling it "hideously dull".

[25] All lyrics are written by Nicky Wire, except "Ocean Spray", by James Dean Bradfield; all music is composed by Bradfield and Sean Moore, except "We Are All Bourgeois Now", written by Tim Gane, Malcolm Eden, John Williamson and Gary BakerOn 9 September 2022, Manic Street Preachers released new 2- and 3-disc editions of Know Your Enemy.

In putting together the reissue, Nicky Wire proposed resurrecting the two separate albums that the band had originally envisioned; James Dean Bradfield agreed on the condition that he was allowed to remix the tracks with Dave Eringa.

This meant including six additional tracks not featured on the original release: the non-album single "The Masses Against the Classes", "Door to the River" from the compilation album Forever Delayed (but with the orchestra removed), the B-sides "Just a Kid" and "Groundhog Days" and the previously unreleased "Rosebud" and "Studies in Paralysis".