With the increase and popularity of the use of internet, hate speech has reached wider dimensions in societies. This thesis will provide empirical examples to show the relation between speech and actions. This paper will use speech-act theory and social movement theory to portray the relation between hate speech on social media and domestic terrorism inspired by far right extremist. Even though, there has been a lot of work for counter terrorism, domestic terrorism is still overlooked. Empirical sources say that domestic terrorism poses a threat as much as international terrorism. This thesis will bring light over the connections of hate speech and domestic terrorism inspired by far right extremists. It will conclude that there is an evident relation that hate speech on social media is contributing to domestic terrorism actions encouraged by far right extremism.