The White Man's Burden is 1899 poem about the America-Philippine War of 1899-1902. In this poem, Kipling encourage the US to take control of Philippine. This means he asks the US to be a colonial power so that it can render the perceived duty of the people of western countries towards the rest of the world. In this poem, Kipling reminds western people to teach and educated the uncivilized world of non-white people since it is the White Man's utmost duty to deliver civilized society to them.
This is more of an opinion based question, you aren't really going to have a right or wrong answer. Personally, I believe everyone should be able to decide whether or not they want to recite our pledge. I stopped standing for the pledge and reciting it in 6th or 7th grade.