I might disagree with a lot of his politics but Jeremy Corbyn was out today bucket shaking for the refugee crisis.
To tell the truth I am a little bit puzzled by the above clause. Does "was out" in the second part of the clause mean a positive statement? Only if it is so the sentence makes sense for me. The author in that case says that despite the fact that she is not a supporter of JC, his today activity in favour of refugees she found praiseworthy. But on the second hand I have not been able to find that "to be out" can have the positive meaning. When the meaning of "to be out" means in the sentence literally that Corbyn's activity was an act of the political incompetence, I do not understand why there is conjunction "but" used there. So how does a native speaker understand that sentence?