Black Sabbath had AC/DC as their opening act back in 1977 when they were tourning in Europe but a fight between the two bands forced the British Heavy Metal group to kick AC/DC out of the tour. The bands are two of the most important heavy groups of all time that inspired millions of musicians over the decades and changed the course of Rock and Roll music. Why Black Sabbath once kicked AC/DC out of their tour in the 70s Ex-AC/DC bassist Mark Evans, who played with the group from 1975 to 1977, recalled in an interview with Let There Be Talk podcast in 2021, the incident that made Black Sabbath kick the Australian group out of the tour explaning that the problem was between Sabbath's bassist Geezer Butler and AC/DC's late guitarist Malcolm Young: "We were touring in Europe with Black Sabbath – we were going to finish in Helsinki [Finland], and then we were going to be going straight to the States. But in that period, when we went back and started the European tour – it was very early 1977. The label in the States – they dropped the band! They were out so we didn’t have a deal in America. Because they heard ‘Dirty Deeds’ and said, ‘Nah, we’re not releasing it.’ Seems incredible now but that was it. “So that sort of destabilized the band, had things a bit rocky. And then we were out in the road with Black Sabbath, and a few things happened on that tour. I had a bit of a run-in with Angus. I think I got up in his nose about something maybe, but maybe if I had been a bit more mature and maybe not drank so much, I would be able to handle the situation better." "And then Malcolm got into a stink with Geezer Butler (Sabbath bassist) for some reason. I don’t know how it happened, but Malcolm had a full dance card with the drinks at night, and he went back to the hotel with Black Sabbath. I wasn’t there, but for some reason, he ended up knocking out Geezer Butler.” He continued: https://www.youtube.com/watch?v=6EWqTym2cQU “I don’t know why but he knocked him, he KO’d him. But there was a story that someone had a gun or someone had a knife. And the next morning, when we were going out of town, Mal said, ‘I’ve got to stop at the hotel and go in there.’" “What was he doing going into the Black Sabbath hotel? Because we really wouldn’t have anything to do with a lot of other bands, except we had a fair bit to do with Ozzy [Osbourne] because Bon [Scott] and Ozzy sort of linked up. If you want a wild night on the river in Hamburg – go out with Ozzy and Bon together. Man, a wrecking machine." “Anyway, Malcolm ended up clocking Geezer, went to the hotel, he would come outside – it’s not looking good – and we got kicked off the tour. So we had about a month left, and that day we got thrown off the tour because of it. And then there was much gnashing of teeth.” Black Sabbath was promoting during that tour the album Technical Ecstasy released one year ago that remains as one of their less famous records. Geezer Butler said that he never threatened Malcolm Young https://www.youtube.com/watch?v=MiY2JsGXrtM Black Sabbath bassist Geezer Butler disagrees with the story and said in an interview with Classic Rock back in 2016 that he never pulled a knife to threaten Malcolm Young: "No, I didn’t pull a knife. I always had flick-knives when I was growing up, because everybody used to go around stabbing each other in Aston. Flick-knives were banned in England, but when we were playing in Switzerland I bought one. I was just flicking it, when Malcolm Young came up to me and started slagging Sabbath…" The musicians was then asked if he flicked the knnife in his general direction, to which he replied: "No. We were having a drink together and I was just playing about with the knife. I was really excited to get one again. I was having a drink, flicking my knife – like you do – and he came over and said: 'You must think you’re big, having a flick-knife.' I said, 'What are you talking about?' And that was it. Nobody got hurt." AC/DC was inducted into the Rock and Roll Hall Of Fame in 2003 by Aerosmith vocalist Steven Tyler. Three years later it was Black Sabbath's turn to be inducted by Metallica's Lars Ulrich and James Hetfield.