Punk

I researched into the most famously known punk band, the Sex Pistols, they are what we commonly associate with punk, for my presentation I will be creating a spin of of my essay looking at the timeline of punk music, how its changed and developed and looking at what we associate with punk in the 21st century and whether it relates to the original.
I will begin this timeline looking at Sex Pistols, I will begin with this song,
http://www.youtube.com/watch?v=dtUH2YSFlVU
"God Save Our Queen"
the single was led to believe to be a assault towards Queen Elizibeth II and the monarchy many lyrics suggested this with "A fascist regime" and "No future in England's dreaming".
At the time of the song both BBC and IBA refused to play the song due to because of the controversial at the time.
The song is about rebelling against British politics, A lot of young people felt alienated by the stifling rule of monarchy and the Queen was their symbol.
This became an anthem for the Punk movement in England. It expressed the anger young people felt toward the establishment. Which is how this song became popular as people of that time could relate to the lyrics, which began this following.
In a 2012 interview with Johnny Rotten he quoted I wrote a record. It wasn't about a specific moment in time or history – I wrote a record about a subject matter that mattered to me, in a personal way, and then all this situation enveloped and unfolded. I never did it as an act of spite against the Jubilee. I don't think that's been quite completely understood."
This is one main difference between music is how Johnny Rotten created this song based on a subject that mattered to him, music to date is often about love or things the single doesn't possibly care about, could this be a result of the chaos caused over the song?
Does this effect us from singling about what matters in fear of it causing an uprising ?
In my opinion singing about what the band/singer feels passionate about gives the band and song more definition and not only to be viewed as band but a political statement.