The Red and Black Bloc staged a walkout after members of the active support were kicked out of the stadium for shouting at players as they headed to the sheds at half-time.

WSW had gone 2-0 down in a matter of moments in the first 45 and furious fans went from one side of ANZ Stadium to the other to vent their frustrations at the team as they went down the tunnel.

But security claimed the fans overstepped the mark and refused to heed warnings about their language before they were escorted out the stadium, sparking the backlash from the rest of the RBB.

The club this week insisted they had bent over backwards to support their fans but the half-time abuse was unacceptable.

Today though the WSW coach said it was fine for fans to behave that way.

"We are professionals," said Babbel today. "We have to handle this if the results are not there. If they are coming to say they are not happy with us, they can shout at us. This is totally normal.

"Of course I understand - supporters want to see that the team is winning. This is the most important thing. It doesn't matter how you play.

"This is not just in Australia, it is everywhere. In Germany, it is the same. If the results are not there you come under pressure from the supporters...but we try to work hard."

Babbel is confident the side is just one early goal away from turning their dismal season around, which sees them languishing third from the bottom, above only Central Coast Mariners, who are heading for the worst season in A-League history, and manager-less Brisbane Roar.

"I still believe the turnaround is coming soon because this is not normally possible to create so many chances and you can't score," he said.

"I have to watch the games without emotions and in the City game, if you see the goals we conceded, to be fair I haven't seen this on this level...unbelievable mistakes what we did at the back.

"We need a bit of luck now but the bit of luck will come if you work hard and you don't drop your performance.

"Then you need one goal, because if you go 1-0 in front, it changes the game. it's always the same - if you are always 1-0 down then it is much more difficult to get a result.

"But if you can go 1-0 in front then maybe the confidence will come back and you score the goals you missed before and now the ball is going in."

He added: "This is football. We are all not happy, not only the supporters.

"We are also not happy with the results but we have to keep going and not bury our head in the sand."