This is a great example of why to check before killing/removing any bugs from your plants. Same thing when you see eggs planted on your leaves. It would suck to crush a bunch of assassin bug eggs on a plant.
I had yellow jackets build a nest inside one of my potted plants last year. On one hand, it's a little sketchy, on the other hand, wasps and Hornets are great multipurpose predators if they aren't located where they will bother you much.