What is Tourist parasols?

The parasols held by tourists on Mostar Bridge symbolize the cheap frivolity which future generations extend to the past. When Sara goes to find Lejla in Mostar, an old Bosnian town with a wealth of tragic and glorious history, she sees crowds of tourists carrying "synthetic parasols" (61). She is overwhelmed by the image, watching them all cross the ancient, beautiful bridge, and compares them to "a wreath of plastic flowers on an important grave" (61). Though Sara has her own angst, trauma, and resentment built in to her relationship with Bosnian history, she cannot stand the shallowness of these passersby, these foreigners who have no sense of what Mostar has been through, what it was like to be in Bosnia, and how much life and suffering the place has seen. They regard it as a passing TV show, take in their own shallow version of antiquated charm, and return home as if nothing has happened. Their disrespect deeply hurts Sara.