In many places around the country, cities provide WiFi service for all their citizens. That won’t happen for years to come in Los Angeles — if ever. But starting today, WiFi will be offered in six city parks, for free. There will be designated “hot spots” in Venice Beach, Pershing Square, the Griffith Observatory, Echo Park Lake and Reseda Park. Councilman Bob Blumenfield has been a champion of what’s called the LA Community Broadband Network.