Mrsobrien, I believe you are thinking of Chicano Park, which is also in Barrio Logan, and does have a terrible reputation. It also has a rich history, and some amazing murals:
http://www.chicanoparksandiego.com/history/page1.html
>>>snip
...An artist by the name of Salvador Torres was in attendance that evening. In his speech. he expressed his vision of local] Chicano painters and sculptors turning the bridge pylons '`into things of beauty, reflecting the Mexican-American culture. We are ready to die." In response, young people at the meeting began to stamp their feet in rhythm, shouting "Viva la raza!" one young man, identifying himself only as a student at San Diego State, directed his statement to city officials:
The word culture is used. To you culture means Taco Bell and the funny Mexican with-, the funny songs. We gave you our culture of a thousand years. What have you given us? A social system that makes us beggars and police who make us afraid. We've got the land and we are going to work it. We are going to get that park. We no longer talk about asking. We have the park.
During the occupation of Chicano Park, the three-acre parcel was transformed into a desert garden of plants and grass. Chicano youth and student organizations from Santa Barbara and Los Angeles traveled to Barrio Logan to offer their support. Women prepared meals for the demonstrators, while others donated trees, seeds, and fertilizer. The occupation represented the first time in which residents had come together in unity for themselves and their community. ........As the park was being transformed, city officials were searching for available land adjacent to freeways, which would be suitable for a highway patrol station If such a site could be found.. the city would then trade it to the state for the occupied site in Barrio Logan...
(article continues, with pictures/virtual tour)
<<<snip
There is also a Memorial Park, which has a skate park and a pool:
http://www.sandiego.gov/park-and-recreation/centers/recctr/dolores.shtml
The article I read said that Nelly hung out at Memorial Park, IIRC, which makes more sense to me. I don't know any of these girls, but there is a 15 yo boy in my extended family who loves to skate and ride mountain bikes, and who spends all summer at the (different) pool. Chicano park has lots of adults who live under the bridges in tents, who hang out there by day, and lots of crime. But, the skate park is usually full of kids, and I've never heard anything bad about it. Yet. So, maybe these girls were just...being girls, and not necessarily looking for trouble.
MOO, and I hope nobody minded a little history lesson!
I'm not confusing the 2 parks, but thanks.
<---not snark or anything, promise. Good to see another local in here!