Thank you for the opportunity to help you with your question!
Though it is always beneficial for society at large to have a balance between liberty and security, but at times a nation has to make choices. In my opinion, it is always right and beneficial to opt for high security over liberty. In these globalized times, when far away corners of the world is connected with each other, security risks are extremely high. Be it 9/11, London train bombing, or recent Paris terrorists attacks, we have examples of unprecedented loss of human lives in recent pass when the establishment failed to provide required security.
Hence considering the ever changing social fabric of the world and increasing intolerance towards others' view point, it is extremely important to focus on security first and foremost.
Are there limits to how much privacy and liberty we can allow and still maintain in a stable society since 9/11? Do you believe that the government’s spying program is an acceptable or not an acceptable limit on personal privacy? If not acceptable, what type of government actions do you believe are acceptable in regards to ensuring national security in 2015 and beyond?
There are always limits of allowing privacy and liberty. These limits depends on the internal and external social, political and Geo-political environment of the time. This is the responsibility of Government and social think tanks to discuss, debate and decided on these limits. However, we must understand that these limits can change from time to time as dynamics of the world changes.
Regading, spying and national security question, it is a different question and will required an in-depth subjective analysis of the matter. You should consider posting it as separate question. It is not possible to answer this question in response of the earlier one.
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