<!-- Set the title of this issue to the name of the proposed tutorial. --> ## Tutorial description <!-- Describe the proposed tutorial. --> Teach users how to run active matter simulations in HOOMD. * 2D active particles * `force.Active` * `methods.OverdampedViscous` * Rotational diffusion. * Quiver plot of particle velocities. ## Author <!-- Are you able to write this tutorial for the benefit of the HOOMD user community? --> I welcome other authors to contribute.