Rangers had led through Ilias Chair's superb opener in the early stages of the second half and they had chances to add to their lead before ultimately being pegged back.
It meant the hosts' run without a win was extended to nine games, but thankfully there was no repeat of their fans booing players taking a knee before kick-off, as was the case against Derby last Saturday, which drew widespread condemnation.
Plenty of attention was placed on what would happen at The Den and Millwall were not let down this time, as their supporters applauded their players standing arm-in-arm with QPR's.
There was also respect shown to the visitors taking a knee before attention switched to the football and it was the Lions who started the brighter, with Shaun Williams sending a good effort from long range wide.
It was the last opening either team created for a while, with moves quickly breaking down in midfield from two out-of-form teams.
Mason Bennett tried to open the game up by shooting on the turn from just outside the area, but his effort flew over the bar, as a disappointing first half came to a close.
Thankfully, there was some excitement within a minute of the restart, as Ball tried to place one from the edge of the area, but Bialkowski got down to push it away.
QPR then broke the deadlock in spectacular fashion in the 53rd minute when Tom Carroll found Chair in space and the Moroccan fired a terrific shot from outside the box that flew past Bialkowski, celebrating by taking a knee.
Scotland striker Lyndon Dykes had a great chance to quickly double the visitors' lead when he was found in space by Chair's lay-off, but he could only shoot at Bialkowski.
The Pole continued to keep Millwall in the game when he got down well to keep out another effort from Chair.
His heroics proved vital, as the Lions equalised with 20 minutes left when Jed Wallace's cross ran for Bodvarsson, whose shot was deflected in just six minutes after the Icelander had been brought on.