Internet activism uses communication technologies like websites and email to organize people around issues like human rights and the environment in order to create social change. Hacktivism combines hacking and activism by using techniques like website defacements and denial of service attacks to disrupt services and draw attention to political or social causes in a nonviolent way. While activism and hacktivism can be effective in achieving goals, they also face criticisms like furthering divisions in society and potentially disrupting free speech.