It is difficult to answer all questions regarding Allende's presidency--like how much the CIA actually influenced the coup, or whether the leftists were preparing to take up arms to defend their government. What we do know is that there were many people both in and outside of Chile that wanted Allende overthrown.
Why was Allende--a man who had so much support from the workers--hated by many other groups? Did he actually overstep the constitution as many of his opponents claim? Why or why not?