But the father of the late 20-year-old college student has had enough. He has spoken and he has a message: Do not neglect the death of my daughter to promote a racist agenda.
"Unfortunately, others have ignored our request," he wrote. "Instead, they have distorted and corrupted Mollie's tragic death in order to advance a cause that has vehemently resisted them."
Tibbetts does not want his daughter to be used as a "farmer in the debate of others," he said.
"Maybe she can not speak for herself, but I can and will, please leave us out of your debate, allow us to grieve in the privacy and dignity." Finally, show some decency my family and Mollie's memory, I implore you to stop. "
A message for the Hispanic community
Rob Tibbetts also turned against the immigrants last at his daughter's funeral Sunday, when he said "the Hispanic community is Iowans," according to the registry. "They have the same values as Iowans, and for me, they are Iowans with better food."
"The person accused of taking Mollie's life is no longer a whitewashing of the Hispanic community, as white racists are from all whites," he said. "To say otherwise is a lie," he wrote.
"For the Hispanic community, my family is with you and offering their heartfelt apology."
"That you were harassed by the circumstances of Mollie's death is false. We appreciate the contribution you bring to the American tapestry in all its color and melody. "
" And yes, "Tibbetts added," we love your food. "
His stepdaughter, "who loved Mollie so much, is Latina," he wrote as well as Mollie's "cherished" nephews. And as an American, he said, he strives to "respect every citizen in the world," he added, "knowingly to stir up discord among races is a disgrace to our flag."
"It fuels fear in innocent communities and gives legitimacy to the darkest, hate-filled corners of the American soul, it's the opposite of leadership, it's the opposite of humanity, it's heartless, it's despicable, it's shameful." 
"Building Bridges, No Walls"
Americans should learn from the teachings imparted not only by his daughter, but also by the late Senator John McCain and singer Aretha Franklin. Fairness and Courage, "wrote Tibbetts.
The search for his daughter brought together many people of diverse backgrounds to work for a common cause, he said." Let us not lose sight of this miracle. "
Americans should instead confront racism in whatever form, Tibbetts wrote and treated others with the same compassion that gave his daughter's country when it came together to bring her home.
"Let us hear, not scream. Let's build bridges, not walls. "
" Let's celebrate our diversity instead of arguing about our differences. I can tell you that differences when you lose your best friend are petty and meaningless. "
CNN's Artemis Moshtaghian and Steve Almasy have contributed to this report.