I believe in being a good citizen as the Newer Testament enjoins, and "rendering unto Caesar" as Jesus enjoins.
BUT- this does not mean Jesus and Caesar are equals. Christ is my Lord and God, Caesar is not.
There are two issues here:
1) The propriety of a Christian doing the pledge at all, since it a type of oath. Jesus enjoins us not to do this. And if we take the pledge, knowing that we would choose God over nation when they conflict, then we are not honoring our pledge. But we betray Christ if we choose nation over God's commandments. Some might think conflicts are rare, but I do not think so, which leads me to my next point.
2) I cannot in good conscience pledge allegiance to the flag when we are bombing Syria and Yemen, and killing thousands of innocents.
I cannot in good conscience salute the flag when I know that we have been lied into wars, the Iraq war being the most recent example, a war in which it is estimated we killed anywhere from 500,000 to 1,500,000 civilians.
I disagree with the notion that our men and women in the armed forces are always "fighting for our freedom," when in fact, many of our actions are to ensure our hegemony as an empire and our corporate economic interests. We have euphemisms such as " we are liberating these people," when in fact, we are invading their country and occupying them.
I cannot in good conscience salute the flag, when black folk (and others of all races) are being gunned down in the street, with no accountability, often unarmed and sometimes without having done anything wrong at all.
As far as honoring veterans go, I think making sure veterans are not homeless, have high quality, reliable health care, and get treatment for PTSD- this would be the REAL way to show respect, not saluting a flag during the so-called national anthem.
As far as Colin Caepernick goes, I believe he is right to protest. I find it ironic that some of the very same people who invoke our service people "who fight for our freedoms" want to turn around and villainize him for exercising it.
I am white, I am part of the dominant culture. But quite frankly, if I was African-American, I would find very little reason to trust my government, civil authorities, courts or law enforcement.
America, or Americans, may do a lot of good things. But patriotism should not blind us to truly grave injustices and violence our nation does. For me, to do the pledge would be to gloss over this.
I would rather exercise my good citizenship, as an American, and as a Christian, to call our society to a greater commitment for social justice. That is how I want to show my love for my country, and for those who sacrificed for it, not by saluting a flag.