Why did the French Revolution become so bloody?

In my opinion, the French Revolution became so bloody
because of the depth of the grievances that the revolutionaries felt and the level of
stubbornness and rigidity that the people in power displayed.  In other words, the
revolutionaries were really angry and the people in power didn't want to give in to them
in any way.

France had been ruled by one of the most
absolute monarchies in Europe.  This meant that the common people had been given little
to no say in government.  They had also been abused in various ways.  Because of this,
they felt strong grievances.  Instead of trying to lessen that sense of grievance, the
monarchy resisted the revolutionaries at every turn.  This led the revolutionaries to
feel even angrier.

So I pretty much blame the monarchy. 
They were too oppressive and too rigid.  They did not give the revolutionaries anything
and that made the revolutionaries violently angry and let the radicals come to
power.