Looks like Aphids to me, but the picture ( at least Here on my end)
is a bit fuzzy when I zoom in.
Insecticidal soap will take care of them, or even an off the shelf garden
product labeled for aphids. You don't have to spray, use a small paint
brush and apply the product directly to the insects. It may take
a few treatments to get rid of them. You can also use Diatomaceous
Earth,as a dust, which will desiccate them.
You can also put on a latex glove and remove them, wiping them off, then apply a drench
to the leaves, stems, and pot(s) where you see them. Be sure to check all your plants, because
they can move around, and be on or in
other pots. When you have Aphids
in the garden, Ants can be associated with Aphids, since they "farm" them,
and can move them from plant to plant, taking the "honeydew" from the
Aphids as they feed off the plant, by feeding on the plant stems with a sucking
mouth part. The little buggers can cause havoc if unchecked...