Can I delete all data for all metrics with a given tag?

Can I delete all data period before a given date?

Off the cuff, it looks like I have to ask for data for each metric
individually to be deleted which means for  2000 metrics, I'd have to send
2,000 deletion requests (which would be unfortunate, but do-able).
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB