1.)Yes, but there are morals which we need to universally agree on, lest we allow chaos to ensue (notice chaos is different than anarchy).
2.)Law is morality agreed upon and codified. Its validity is predicated on an agreed morality.
3.) Life must be preserved in every for instance lest it be made relative
4.) if made relative, morality is no longer agreed upon therefore Law is no longer valid.
5.) Law then becomes an instrument of force, of one person's or group of person's will, separate from morality.
6.) If it is separate from morality than there can be no justice.
7.) If there is no justice there is no freedom, only tyranny.
8.) Abortion makes life relative.
9.) It says at this particular time life has no meaning.
10.) If life has no meaning at this particular time than we can just as easily determine that life has no meaning at any particular time.
11.) If that is the case than murder is no longer a moral dilemma and any laws against such are tyrannical. This is already the case for the most part as you or I cannot go out and murder someone but we can contain someone, find reason enough, and in the name of the State put that person to death. We can in the name of the State send many, many men overseas and find reason enough to have them kill many, many men.
12.) Perhaps pro-abortionists feel a sense of vindication over the hypocrisy of the latter, but than they are no less the hypocrites.
13.) Since many who are "pro-choice" (a laughable title, as the life in question has no choice in whether it will be snuffed out) are also claimants of "give peace a chance", they're anti-war and anti-capital punishment. I can only imagine that this is their little way of saying "See, see State, we have the power to kill too! We are your equal!". Of course they are not, but it's all subjective, right?