Can philosophers be good activists? This essay defines activism for the philosopher and then provides a normative conception of a good philosopher-activist that is grounded in rational integrity and sound rational deliberation. I argue that because philosophers have been trained in reasoning and argumentation, they can contribute these skills to an activist movement. An activist with rational integrity exhibits five skills or virtues: they are honest, rational, logical, deliberative, and respectful. Conversely, bad philosopher-activists display five vices: they are dishonest, manipulative, obfuscating, thoughtless, and insulting. Next, I argue that rhetorical and reasoning skills are only part of what define good activism, and describe the soft skills needed for effective activism. Philosophical training sometimes works against the development of these soft skills, but they are critical to the success of the philosopher-activist. I conclude by describing activism within the context of academic life and argue that philosophers who engage in activism can do so in an intellectually responsible way.