I'm not going to change the world overnight. It's one person at a time and hopefully they're people in positions of power who can help people get in those roles and really truly embrace colorblind casting.
The reality of split government puts a premium on creativity within the administration. President Obama needs to put the right people in charge of the agencies and then have them push the bounds of administrative power to change policy through those agencies. President Obama has a pretty good track record of this.
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Really each era has its own false nostalgia. We all put a picket fence up around something. For my generation it was the '50s and for other generations it will be something else. Change is scary for everyone as is complexity contradiction and an uncertain future.