Purpose: To mock el partido republicano.
Meaning: In 1917, there were many revolts against conservatives and many socialist and anarchist ideas. This cartoon is representing the republican party as shabby. Noting the policemen and the dialogue, the cartoon is also implying that the republicans have "bad heads" and they will easily be defeated.
Limitations: Clearly the cartoon is biased and was drawn by someone not from the republican party. We can't really ascertain how the republicans were reacting during this time period.
Value: Because it is from the proper time period it, it is a very valuable cartoon and it depicts a very distinct view point against republicans.
How else is this cartoon portraying the republican party?