The author is overstating the scope of this bill. Here are some definitions:
“(2) Violent radicalization.—The term ‘violent radicalization’ means the process of adopting or promoting an extremist belief system for the purpose of facilitating ideologically based
violence to advance political, religious, or social change.
“(3) Homegrown terrorism.—The term ‘homegrown terrorism’ means the use, planned use, or threatened use, of
force or violence by a group or individual born, raised, or based and operating primarily within the United States or any possession of the United States to intimidate or coerce the United States government, the civilian population of the United States, or any segment thereof, in furtherance of political or social objectives.
“(4) Ideologically based violence.—The term ‘ideologically based violence’ means the use, planned use, or threatened use of force or violence by a group or individual to promote the group or individual’s political, religious, or social beliefs.
http://thomas.loc.gov/home/gpoxmlc110/h1955_rfs.xmlI think the key words are "violence" and "force." Without those words, I'd have a problem.