The skinheads came from modernist expansion which came from mods.
First of all, mods, it's simply of london young of low middle class. which came jews familiy, greek origins and afro-américans.  

                                  Several teenagers became mods.
Hard mods came and tended to hold on modernist identity of sixties (1963-1965).
Hards mods met rude boys (jamaican and caribbean immigrants) and this two mouvement became skinheads .
The skinhead mouvement was a counterculture of hippie mouvement and it was to this moment, the skinhead are not politicized. When the punk's wave appears in seventeens, the skinhead movement know a renewal in the eighteens to integrate to them, it's to this moment which began the skin OI !                                                                                                                                                                                              

                             And ideas of the extreme right...
The bonhead appaears and is nationalist and to extreme-right.
In reaction to bonheads, several movements skinheads began and are politicised

R.A.S.H : Red and Anarchist Skin Head
S.H.A.R.P : Skinhead Engaged Against Extreme-Right
REDSKIN : Anti-racism.