What Does Lebron Mean by "Radicalism

What does Lebron mean by "radicalism?"

A) The use of strong, nonconventional, and unsanctioned means to effect systemic change by either disrupting the status quo or reinstating a preferred previous status quo
B) The promotion of systemic social or political changes through engagement with existing social or political institutions
C) The use of violent, destructive means to tear down existing social or political structures
D) The promotion of policies that cut against conventional wisdom by persuading others using evocative political rhetoric