Community calls for federal aid as Chicago police investigate weekend shootings, at least 4 killedCommunity members called for federal aid Sunday as Chicago police investigate weekend shootings that left at least four dead and multiple hurt. Community members called for federal aid Sunday as Chicago police investigate weekend shootings that left at least four dead and multiple hurt. Community members called for federal aid Sunday as Chicago police investigate weekend shootings that left at least four dead and multiple hurt. Community members called for federal aid Sunday as Chicago police investigate weekend shootings that left at least four dead and multiple hurt. Police have not announced any arrests in connection with any of the weekend shootings.