I am making a diagram in my paper. In that diagram I use several squares of different colors and one rectangle of multiple colors. An easy way to get a rectangle full of colors is the rainbow flag. I am sympathetic to the LGBT cause, but I am not LGBT. I thought the flag could be a small gesture but I am not trying to make a strong political point.
One labmate told me to not put political symbols in papers (+could make people think I am LGBT, nothing wrong with that, but false); another says it's completely fine. I am considering whether to keep the flag or find an alternative (different colors, structure, or move the colors around).